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Finding the Fourth Proportional to 675,937.14, 932,838.40 and 389,475.78

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Solution

The fourth proportional to 675,937.14, 932,838.40 and 389,475.78 is: 537,502.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,937.14 : 932,838.40 = 389,475.78 : x
  2. Step 2: Convert to fraction form
    675,937.14/932,838.40 = 389,475.78/x
  3. Step 3: Cross multiply
    675,937.14x = 932,838.40 × 389,475.78
  4. Step 4: Simplify right side
    675,937.14x = 363,317,963,453.95
  5. Step 5: Solve for x
    x = 363,317,963,453.95/675,937.14
  6. Step 6: Final answer
    x = 537,502.59

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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.