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Finding the Fourth Proportional to 610,065.80, 915,098.70 and 397,489.40

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Solution

The fourth proportional to 610,065.80, 915,098.70 and 397,489.40 is: 596,234.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,065.80 : 915,098.70 = 397,489.40 : x
  2. Step 2: Convert to fraction form
    610,065.80/915,098.70 = 397,489.40/x
  3. Step 3: Cross multiply
    610,065.80x = 915,098.70 × 397,489.40
  4. Step 4: Simplify right side
    610,065.80x = 363,742,033,203.78
  5. Step 5: Solve for x
    x = 363,742,033,203.78/610,065.80
  6. Step 6: Final answer
    x = 596,234.10

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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.