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Finding the Fourth Proportional to 429,333.89, 647,086.82 and 370,077.55

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Solution

The fourth proportional to 429,333.89, 647,086.82 and 370,077.55 is: 557,776.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,333.89 : 647,086.82 = 370,077.55 : x
  2. Step 2: Convert to fraction form
    429,333.89/647,086.82 = 370,077.55/x
  3. Step 3: Cross multiply
    429,333.89x = 647,086.82 × 370,077.55
  4. Step 4: Simplify right side
    429,333.89x = 239,472,306,521.14
  5. Step 5: Solve for x
    x = 239,472,306,521.14/429,333.89
  6. Step 6: Final answer
    x = 557,776.39

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1.5x scale

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.