Home / 1,123,143.90-1,681,216.65-808,215.90

Finding the Fourth Proportional to 1,123,143.90, 1,681,216.65 and 808,215.90

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Solution

The fourth proportional to 1,123,143.90, 1,681,216.65 and 808,215.90 is: 1,209,805.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,123,143.90 : 1,681,216.65 = 808,215.90 : x
  2. Step 2: Convert to fraction form
    1,123,143.90/1,681,216.65 = 808,215.90/x
  3. Step 3: Cross multiply
    1,123,143.90x = 1,681,216.65 × 808,215.90
  4. Step 4: Simplify right side
    1,123,143.90x = 1,358,786,027,874.73
  5. Step 5: Solve for x
    x = 1,358,786,027,874.73/1,123,143.90
  6. Step 6: Final answer
    x = 1,209,805.82

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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.