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Finding the Fourth Proportional to 522,078.80, 729,138.85 and 522,078.80

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Solution

The fourth proportional to 522,078.80, 729,138.85 and 522,078.80 is: 729,138.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,078.80 : 729,138.85 = 522,078.80 : x
  2. Step 2: Convert to fraction form
    522,078.80/729,138.85 = 522,078.80/x
  3. Step 3: Cross multiply
    522,078.80x = 729,138.85 × 522,078.80
  4. Step 4: Simplify right side
    522,078.80x = 380,667,935,841.38
  5. Step 5: Solve for x
    x = 380,667,935,841.38/522,078.80
  6. Step 6: Final answer
    x = 729,138.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.