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Finding the Fourth Proportional to 519,404.90, 779,354.10 and 359,726.58

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Solution

The fourth proportional to 519,404.90, 779,354.10 and 359,726.58 is: 539,760.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,404.90 : 779,354.10 = 359,726.58 : x
  2. Step 2: Convert to fraction form
    519,404.90/779,354.10 = 359,726.58/x
  3. Step 3: Cross multiply
    519,404.90x = 779,354.10 × 359,726.58
  4. Step 4: Simplify right side
    519,404.90x = 280,354,385,001.98
  5. Step 5: Solve for x
    x = 280,354,385,001.98/519,404.90
  6. Step 6: Final answer
    x = 539,760.77

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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.