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Finding the Fourth Proportional to 1,000,432.73, 1,377,686 and 869,551.72

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Solution

The fourth proportional to 1,000,432.73, 1,377,686 and 869,551.72 is: 1,197,451.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,000,432.73 : 1,377,686 = 869,551.72 : x
  2. Step 2: Convert to fraction form
    1,000,432.73/1,377,686 = 869,551.72/x
  3. Step 3: Cross multiply
    1,000,432.73x = 1,377,686 × 869,551.72
  4. Step 4: Simplify right side
    1,000,432.73x = 1,197,969,230,919.92
  5. Step 5: Solve for x
    x = 1,197,969,230,919.92/1,000,432.73
  6. Step 6: Final answer
    x = 1,197,451.06

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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.