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Finding the Fourth Proportional to 684,618.31, 944,761.59 and 378,694.46

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Solution

The fourth proportional to 684,618.31, 944,761.59 and 378,694.46 is: 522,591.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,618.31 : 944,761.59 = 378,694.46 : x
  2. Step 2: Convert to fraction form
    684,618.31/944,761.59 = 378,694.46/x
  3. Step 3: Cross multiply
    684,618.31x = 944,761.59 × 378,694.46
  4. Step 4: Simplify right side
    684,618.31x = 357,775,975,429.98
  5. Step 5: Solve for x
    x = 357,775,975,429.98/684,618.31
  6. Step 6: Final answer
    x = 522,591.89

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1.5x scale

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.