Home / 648,117.10-972,175.65-487,153.90

Finding the Fourth Proportional to 648,117.10, 972,175.65 and 487,153.90

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Solution

The fourth proportional to 648,117.10, 972,175.65 and 487,153.90 is: 730,730.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,117.10 : 972,175.65 = 487,153.90 : x
  2. Step 2: Convert to fraction form
    648,117.10/972,175.65 = 487,153.90/x
  3. Step 3: Cross multiply
    648,117.10x = 972,175.65 × 487,153.90
  4. Step 4: Simplify right side
    648,117.10x = 473,599,159,382.54
  5. Step 5: Solve for x
    x = 473,599,159,382.54/648,117.10
  6. Step 6: Final answer
    x = 730,730.85

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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.