Home / 715,447.40-1,073,171.10-432,012.20

Finding the Fourth Proportional to 715,447.40, 1,073,171.10 and 432,012.20

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Solution

The fourth proportional to 715,447.40, 1,073,171.10 and 432,012.20 is: 648,018.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,447.40 : 1,073,171.10 = 432,012.20 : x
  2. Step 2: Convert to fraction form
    715,447.40/1,073,171.10 = 432,012.20/x
  3. Step 3: Cross multiply
    715,447.40x = 1,073,171.10 × 432,012.20
  4. Step 4: Simplify right side
    715,447.40x = 463,623,007,887.42
  5. Step 5: Solve for x
    x = 463,623,007,887.42/715,447.40
  6. Step 6: Final answer
    x = 648,018.30

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Half scale
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Double scale
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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.