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Finding the Fourth Proportional to 552,787.98, 762,838.48 and 311,070.42

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Solution

The fourth proportional to 552,787.98, 762,838.48 and 311,070.42 is: 429,272.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,787.98 : 762,838.48 = 311,070.42 : x
  2. Step 2: Convert to fraction form
    552,787.98/762,838.48 = 311,070.42/x
  3. Step 3: Cross multiply
    552,787.98x = 762,838.48 × 311,070.42
  4. Step 4: Simplify right side
    552,787.98x = 237,296,486,365.76
  5. Step 5: Solve for x
    x = 237,296,486,365.76/552,787.98
  6. Step 6: Final answer
    x = 429,272.15

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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.