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Finding the Fourth Proportional to 407,788.20, 610,472.70 and 303,071.40

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Solution

The fourth proportional to 407,788.20, 610,472.70 and 303,071.40 is: 453,708.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,788.20 : 610,472.70 = 303,071.40 : x
  2. Step 2: Convert to fraction form
    407,788.20/610,472.70 = 303,071.40/x
  3. Step 3: Cross multiply
    407,788.20x = 610,472.70 × 303,071.40
  4. Step 4: Simplify right side
    407,788.20x = 185,016,815,850.78
  5. Step 5: Solve for x
    x = 185,016,815,850.78/407,788.20
  6. Step 6: Final answer
    x = 453,708.12

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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.