Home / 1,287,511.20-1,776,666.96-743,398.56

Finding the Fourth Proportional to 1,287,511.20, 1,776,666.96 and 743,398.56

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Solution

The fourth proportional to 1,287,511.20, 1,776,666.96 and 743,398.56 is: 1,025,833.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,511.20 : 1,776,666.96 = 743,398.56 : x
  2. Step 2: Convert to fraction form
    1,287,511.20/1,776,666.96 = 743,398.56/x
  3. Step 3: Cross multiply
    1,287,511.20x = 1,776,666.96 × 743,398.56
  4. Step 4: Simplify right side
    1,287,511.20x = 1,320,771,659,663.58
  5. Step 5: Solve for x
    x = 1,320,771,659,663.58/1,287,511.20
  6. Step 6: Final answer
    x = 1,025,833.14

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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.