Home / 1,123,145.90-1,681,219.65-808,217.90

Finding the Fourth Proportional to 1,123,145.90, 1,681,219.65 and 808,217.90

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Solution

The fourth proportional to 1,123,145.90, 1,681,219.65 and 808,217.90 is: 1,209,808.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,123,145.90 : 1,681,219.65 = 808,217.90 : x
  2. Step 2: Convert to fraction form
    1,123,145.90/1,681,219.65 = 808,217.90/x
  3. Step 3: Cross multiply
    1,123,145.90x = 1,681,219.65 × 808,217.90
  4. Step 4: Simplify right side
    1,123,145.90x = 1,358,791,814,961.73
  5. Step 5: Solve for x
    x = 1,358,791,814,961.73/1,123,145.90
  6. Step 6: Final answer
    x = 1,209,808.82

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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.