Home / 1,127,242.62-1,555,657.38-643,964.63

Finding the Fourth Proportional to 1,127,242.62, 1,555,657.38 and 643,964.63

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Solution

The fourth proportional to 1,127,242.62, 1,555,657.38 and 643,964.63 is: 888,706.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,127,242.62 : 1,555,657.38 = 643,964.63 : x
  2. Step 2: Convert to fraction form
    1,127,242.62/1,555,657.38 = 643,964.63/x
  3. Step 3: Cross multiply
    1,127,242.62x = 1,555,657.38 × 643,964.63
  4. Step 4: Simplify right side
    1,127,242.62x = 1,001,788,321,340.18
  5. Step 5: Solve for x
    x = 1,001,788,321,340.18/1,127,242.62
  6. Step 6: Final answer
    x = 888,706.92

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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.