Home / 1,305,710,017.40-1,958,565,026.10-432,446,166.20

Finding the Fourth Proportional to 1,305,710,017.40, 1,958,565,026.10 and 432,446,166.20

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Solution

The fourth proportional to 1,305,710,017.40, 1,958,565,026.10 and 432,446,166.20 is: 648,669,249.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,305,710,017.40 : 1,958,565,026.10 = 432,446,166.20 : x
  2. Step 2: Convert to fraction form
    1,305,710,017.40/1,958,565,026.10 = 432,446,166.20/x
  3. Step 3: Cross multiply
    1,305,710,017.40x = 1,958,565,026.10 × 432,446,166.20
  4. Step 4: Simplify right side
    1,305,710,017.40x = 846,973,936,790,347,904
  5. Step 5: Solve for x
    x = 846,973,936,790,347,904/1,305,710,017.40
  6. Step 6: Final answer
    x = 648,669,249.30

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Half scale
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Double scale
Find fourth proportional to 1,305,710,018.40, 1,958,565,027.60 and 432,446,167.20
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.