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Finding the Fourth Proportional to 710,472.52, 980,440.50 and 388,175.68

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Solution

The fourth proportional to 710,472.52, 980,440.50 and 388,175.68 is: 535,676.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,472.52 : 980,440.50 = 388,175.68 : x
  2. Step 2: Convert to fraction form
    710,472.52/980,440.50 = 388,175.68/x
  3. Step 3: Cross multiply
    710,472.52x = 980,440.50 × 388,175.68
  4. Step 4: Simplify right side
    710,472.52x = 380,583,157,787.04
  5. Step 5: Solve for x
    x = 380,583,157,787.04/710,472.52
  6. Step 6: Final answer
    x = 535,676.11

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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.