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Finding the Fourth Proportional to 425,854.28, 637,690.56 and 413,240.96

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Solution

The fourth proportional to 425,854.28, 637,690.56 and 413,240.96 is: 618,802.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,854.28 : 637,690.56 = 413,240.96 : x
  2. Step 2: Convert to fraction form
    425,854.28/637,690.56 = 413,240.96/x
  3. Step 3: Cross multiply
    425,854.28x = 637,690.56 × 413,240.96
  4. Step 4: Simplify right side
    425,854.28x = 263,519,859,197.34
  5. Step 5: Solve for x
    x = 263,519,859,197.34/425,854.28
  6. Step 6: Final answer
    x = 618,802.89

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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.