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Finding the Fourth Proportional to 684,371.42, 944,438.71 and 378,468.52

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Solution

The fourth proportional to 684,371.42, 944,438.71 and 378,468.52 is: 522,289.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,371.42 : 944,438.71 = 378,468.52 : x
  2. Step 2: Convert to fraction form
    684,371.42/944,438.71 = 378,468.52/x
  3. Step 3: Cross multiply
    684,371.42x = 944,438.71 × 378,468.52
  4. Step 4: Simplify right side
    684,371.42x = 357,440,318,206.77
  5. Step 5: Solve for x
    x = 357,440,318,206.77/684,371.42
  6. Step 6: Final answer
    x = 522,289.95

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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.