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Finding the Fourth Proportional to 610,424.20, 915,417.60 and 310,805.20

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Solution

The fourth proportional to 610,424.20, 915,417.60 and 310,805.20 is: 466,096.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,424.20 : 915,417.60 = 310,805.20 : x
  2. Step 2: Convert to fraction form
    610,424.20/915,417.60 = 310,805.20/x
  3. Step 3: Cross multiply
    610,424.20x = 915,417.60 × 310,805.20
  4. Step 4: Simplify right side
    610,424.20x = 284,516,550,251.52
  5. Step 5: Solve for x
    x = 284,516,550,251.52/610,424.20
  6. Step 6: Final answer
    x = 466,096.45

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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.