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Finding the Fourth Proportional to 684,622.96, 944,706.95 and 378,650.73

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Solution

The fourth proportional to 684,622.96, 944,706.95 and 378,650.73 is: 522,497.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,622.96 : 944,706.95 = 378,650.73 : x
  2. Step 2: Convert to fraction form
    684,622.96/944,706.95 = 378,650.73/x
  3. Step 3: Cross multiply
    684,622.96x = 944,706.95 × 378,650.73
  4. Step 4: Simplify right side
    684,622.96x = 357,713,976,253.57
  5. Step 5: Solve for x
    x = 357,713,976,253.57/684,622.96
  6. Step 6: Final answer
    x = 522,497.78

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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.