Home / 916,526.10-1,374,789.15-820,103.70

Finding the Fourth Proportional to 916,526.10, 1,374,789.15 and 820,103.70

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Solution

The fourth proportional to 916,526.10, 1,374,789.15 and 820,103.70 is: 1,230,155.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    916,526.10 : 1,374,789.15 = 820,103.70 : x
  2. Step 2: Convert to fraction form
    916,526.10/1,374,789.15 = 820,103.70/x
  3. Step 3: Cross multiply
    916,526.10x = 1,374,789.15 × 820,103.70
  4. Step 4: Simplify right side
    916,526.10x = 1,127,469,668,634.86
  5. Step 5: Solve for x
    x = 1,127,469,668,634.86/916,526.10
  6. Step 6: Final answer
    x = 1,230,155.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.