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Finding the Fourth Proportional to 425,956.80, 637,605.60 and 313,763.52

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Solution

The fourth proportional to 425,956.80, 637,605.60 and 313,763.52 is: 469,665.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,956.80 : 637,605.60 = 313,763.52 : x
  2. Step 2: Convert to fraction form
    425,956.80/637,605.60 = 313,763.52/x
  3. Step 3: Cross multiply
    425,956.80x = 637,605.60 × 313,763.52
  4. Step 4: Simplify right side
    425,956.80x = 200,057,377,427.71
  5. Step 5: Solve for x
    x = 200,057,377,427.71/425,956.80
  6. Step 6: Final answer
    x = 469,665.88

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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.