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Finding the Fourth Proportional to 706,123.26, 974,226.15 and 438,006.78

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Solution

The fourth proportional to 706,123.26, 974,226.15 and 438,006.78 is: 604,310.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    706,123.26 : 974,226.15 = 438,006.78 : x
  2. Step 2: Convert to fraction form
    706,123.26/974,226.15 = 438,006.78/x
  3. Step 3: Cross multiply
    706,123.26x = 974,226.15 × 438,006.78
  4. Step 4: Simplify right side
    706,123.26x = 426,717,658,953.30
  5. Step 5: Solve for x
    x = 426,717,658,953.30/706,123.26
  6. Step 6: Final answer
    x = 604,310.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.