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Finding the Fourth Proportional to 678,079.50, 935,793.45 and 376,273.50

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Solution

The fourth proportional to 678,079.50, 935,793.45 and 376,273.50 is: 519,281.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,079.50 : 935,793.45 = 376,273.50 : x
  2. Step 2: Convert to fraction form
    678,079.50/935,793.45 = 376,273.50/x
  3. Step 3: Cross multiply
    678,079.50x = 935,793.45 × 376,273.50
  4. Step 4: Simplify right side
    678,079.50x = 352,114,276,708.58
  5. Step 5: Solve for x
    x = 352,114,276,708.58/678,079.50
  6. Step 6: Final answer
    x = 519,281.70

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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.