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Finding the Fourth Proportional to 425,940.30, 637,817.76 and 413,326.98

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Solution

The fourth proportional to 425,940.30, 637,817.76 and 413,326.98 is: 618,930.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,940.30 : 637,817.76 = 413,326.98 : x
  2. Step 2: Convert to fraction form
    425,940.30/637,817.76 = 413,326.98/x
  3. Step 3: Cross multiply
    425,940.30x = 637,817.76 × 413,326.98
  4. Step 4: Simplify right side
    425,940.30x = 263,627,288,531.17
  5. Step 5: Solve for x
    x = 263,627,288,531.17/425,940.30
  6. Step 6: Final answer
    x = 618,930.14

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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.