Home / 648,010.10-972,015.15-487,046.90

Finding the Fourth Proportional to 648,010.10, 972,015.15 and 487,046.90

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Solution

The fourth proportional to 648,010.10, 972,015.15 and 487,046.90 is: 730,570.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,010.10 : 972,015.15 = 487,046.90 : x
  2. Step 2: Convert to fraction form
    648,010.10/972,015.15 = 487,046.90/x
  3. Step 3: Cross multiply
    648,010.10x = 972,015.15 × 487,046.90
  4. Step 4: Simplify right side
    648,010.10x = 473,416,965,560.54
  5. Step 5: Solve for x
    x = 473,416,965,560.54/648,010.10
  6. Step 6: Final answer
    x = 730,570.35

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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.