Home / 1,387,145.38-1,913,494.17-1,129,299.70

Finding the Fourth Proportional to 1,387,145.38, 1,913,494.17 and 1,129,299.70

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Solution

The fourth proportional to 1,387,145.38, 1,913,494.17 and 1,129,299.70 is: 1,557,809.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,387,145.38 : 1,913,494.17 = 1,129,299.70 : x
  2. Step 2: Convert to fraction form
    1,387,145.38/1,913,494.17 = 1,129,299.70/x
  3. Step 3: Cross multiply
    1,387,145.38x = 1,913,494.17 × 1,129,299.70
  4. Step 4: Simplify right side
    1,387,145.38x = 2,160,908,392,132.75
  5. Step 5: Solve for x
    x = 2,160,908,392,132.75/1,387,145.38
  6. Step 6: Final answer
    x = 1,557,809.60

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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.