Home / 847,866.77-1,170,108.48-485,282.90

Finding the Fourth Proportional to 847,866.77, 1,170,108.48 and 485,282.90

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Solution

The fourth proportional to 847,866.77, 1,170,108.48 and 485,282.90 is: 669,720.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    847,866.77 : 1,170,108.48 = 485,282.90 : x
  2. Step 2: Convert to fraction form
    847,866.77/1,170,108.48 = 485,282.90/x
  3. Step 3: Cross multiply
    847,866.77x = 1,170,108.48 × 485,282.90
  4. Step 4: Simplify right side
    847,866.77x = 567,833,630,638.45
  5. Step 5: Solve for x
    x = 567,833,630,638.45/847,866.77
  6. Step 6: Final answer
    x = 669,720.35

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.