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Finding the Fourth Proportional to 429,358.90, 647,124.54 and 370,102.59

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Solution

The fourth proportional to 429,358.90, 647,124.54 and 370,102.59 is: 557,814.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,358.90 : 647,124.54 = 370,102.59 : x
  2. Step 2: Convert to fraction form
    429,358.90/647,124.54 = 370,102.59/x
  3. Step 3: Cross multiply
    429,358.90x = 647,124.54 × 370,102.59
  4. Step 4: Simplify right side
    429,358.90x = 239,502,468,306.56
  5. Step 5: Solve for x
    x = 239,502,468,306.56/429,358.90
  6. Step 6: Final answer
    x = 557,814.15

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.