Home / 1,123,141.90-1,681,213.65-808,213.90

Finding the Fourth Proportional to 1,123,141.90, 1,681,213.65 and 808,213.90

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Solution

The fourth proportional to 1,123,141.90, 1,681,213.65 and 808,213.90 is: 1,209,802.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,123,141.90 : 1,681,213.65 = 808,213.90 : x
  2. Step 2: Convert to fraction form
    1,123,141.90/1,681,213.65 = 808,213.90/x
  3. Step 3: Cross multiply
    1,123,141.90x = 1,681,213.65 × 808,213.90
  4. Step 4: Simplify right side
    1,123,141.90x = 1,358,780,240,799.73
  5. Step 5: Solve for x
    x = 1,358,780,240,799.73/1,123,141.90
  6. Step 6: Final answer
    x = 1,209,802.82

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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.