Home / 1,388,505.76-1,916,545.30-807,865.46

Finding the Fourth Proportional to 1,388,505.76, 1,916,545.30 and 807,865.46

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Solution

The fourth proportional to 1,388,505.76, 1,916,545.30 and 807,865.46 is: 1,115,091.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388,505.76 : 1,916,545.30 = 807,865.46 : x
  2. Step 2: Convert to fraction form
    1,388,505.76/1,916,545.30 = 807,865.46/x
  3. Step 3: Cross multiply
    1,388,505.76x = 1,916,545.30 × 807,865.46
  4. Step 4: Simplify right side
    1,388,505.76x = 1,548,310,761,304.80
  5. Step 5: Solve for x
    x = 1,548,310,761,304.80/1,388,505.76
  6. Step 6: Final answer
    x = 1,115,091.35

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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.