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Finding the Fourth Proportional to 610,690.20, 916,910.10 and 344,969.70

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Solution

The fourth proportional to 610,690.20, 916,910.10 and 344,969.70 is: 517,948.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,690.20 : 916,910.10 = 344,969.70 : x
  2. Step 2: Convert to fraction form
    610,690.20/916,910.10 = 344,969.70/x
  3. Step 3: Cross multiply
    610,690.20x = 916,910.10 × 344,969.70
  4. Step 4: Simplify right side
    610,690.20x = 316,306,202,123.97
  5. Step 5: Solve for x
    x = 316,306,202,123.97/610,690.20
  6. Step 6: Final answer
    x = 517,948.71

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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.