Home / 648,010.10-972,015.15-514,165.70

Finding the Fourth Proportional to 648,010.10, 972,015.15 and 514,165.70

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Solution

The fourth proportional to 648,010.10, 972,015.15 and 514,165.70 is: 771,248.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,010.10 : 972,015.15 = 514,165.70 : x
  2. Step 2: Convert to fraction form
    648,010.10/972,015.15 = 514,165.70/x
  3. Step 3: Cross multiply
    648,010.10x = 972,015.15 × 514,165.70
  4. Step 4: Simplify right side
    648,010.10x = 499,776,850,010.36
  5. Step 5: Solve for x
    x = 499,776,850,010.36/648,010.10
  6. Step 6: Final answer
    x = 771,248.55

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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.