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Finding the Fourth Proportional to 684,657.28, 944,754.18 and 378,685

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Solution

The fourth proportional to 684,657.28, 944,754.18 and 378,685 is: 522,545.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,657.28 : 944,754.18 = 378,685 : x
  2. Step 2: Convert to fraction form
    684,657.28/944,754.18 = 378,685/x
  3. Step 3: Cross multiply
    684,657.28x = 944,754.18 × 378,685
  4. Step 4: Simplify right side
    684,657.28x = 357,764,236,653.30
  5. Step 5: Solve for x
    x = 357,764,236,653.30/684,657.28
  6. Step 6: Final answer
    x = 522,545.00

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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.