Home / 1,500,123.92-2,070,091.56-820,929.20

Finding the Fourth Proportional to 1,500,123.92, 2,070,091.56 and 820,929.20

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Solution

The fourth proportional to 1,500,123.92, 2,070,091.56 and 820,929.20 is: 1,132,838.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,500,123.92 : 2,070,091.56 = 820,929.20 : x
  2. Step 2: Convert to fraction form
    1,500,123.92/2,070,091.56 = 820,929.20/x
  3. Step 3: Cross multiply
    1,500,123.92x = 2,070,091.56 × 820,929.20
  4. Step 4: Simplify right side
    1,500,123.92x = 1,699,398,608,277.55
  5. Step 5: Solve for x
    x = 1,699,398,608,277.55/1,500,123.92
  6. Step 6: Final answer
    x = 1,132,838.82

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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.