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Finding the Fourth Proportional to 1,079,498.76, 1,489,834.62 and 897,890.28

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Solution

The fourth proportional to 1,079,498.76, 1,489,834.62 and 897,890.28 is: 1,239,193.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,079,498.76 : 1,489,834.62 = 897,890.28 : x
  2. Step 2: Convert to fraction form
    1,079,498.76/1,489,834.62 = 897,890.28/x
  3. Step 3: Cross multiply
    1,079,498.76x = 1,489,834.62 × 897,890.28
  4. Step 4: Simplify right side
    1,079,498.76x = 1,337,708,024,105.49
  5. Step 5: Solve for x
    x = 1,337,708,024,105.49/1,079,498.76
  6. Step 6: Final answer
    x = 1,239,193.66

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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.