Home / 1,398,929.70-2,098,394.55-1,288,704.90

Finding the Fourth Proportional to 1,398,929.70, 2,098,394.55 and 1,288,704.90

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Solution

The fourth proportional to 1,398,929.70, 2,098,394.55 and 1,288,704.90 is: 1,933,057.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,398,929.70 : 2,098,394.55 = 1,288,704.90 : x
  2. Step 2: Convert to fraction form
    1,398,929.70/2,098,394.55 = 1,288,704.90/x
  3. Step 3: Cross multiply
    1,398,929.70x = 2,098,394.55 × 1,288,704.90
  4. Step 4: Simplify right side
    1,398,929.70x = 2,704,211,338,718.29
  5. Step 5: Solve for x
    x = 2,704,211,338,718.29/1,398,929.70
  6. Step 6: Final answer
    x = 1,933,057.35

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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.