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Finding the Fourth Proportional to 710,521.47, 980,519.88 and 383,834.60

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Solution

The fourth proportional to 710,521.47, 980,519.88 and 383,834.60 is: 529,691.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,521.47 : 980,519.88 = 383,834.60 : x
  2. Step 2: Convert to fraction form
    710,521.47/980,519.88 = 383,834.60/x
  3. Step 3: Cross multiply
    710,521.47x = 980,519.88 × 383,834.60
  4. Step 4: Simplify right side
    710,521.47x = 376,357,456,145.58
  5. Step 5: Solve for x
    x = 376,357,456,145.58/710,521.47
  6. Step 6: Final answer
    x = 529,691.88

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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.