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Finding the Fourth Proportional to 684,520, 944,615.04 and 378,591.52

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Solution

The fourth proportional to 684,520, 944,615.04 and 378,591.52 is: 522,443.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,520 : 944,615.04 = 378,591.52 : x
  2. Step 2: Convert to fraction form
    684,520/944,615.04 = 378,591.52/x
  3. Step 3: Cross multiply
    684,520x = 944,615.04 × 378,591.52
  4. Step 4: Simplify right side
    684,520x = 357,623,243,808.46
  5. Step 5: Solve for x
    x = 357,623,243,808.46/684,520
  6. Step 6: Final answer
    x = 522,443.82

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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.