Home / 1,070,812.43-1,605,419.75-644,248.30

Finding the Fourth Proportional to 1,070,812.43, 1,605,419.75 and 644,248.30

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Solution

The fourth proportional to 1,070,812.43, 1,605,419.75 and 644,248.30 is: 965,891.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,070,812.43 : 1,605,419.75 = 644,248.30 : x
  2. Step 2: Convert to fraction form
    1,070,812.43/1,605,419.75 = 644,248.30/x
  3. Step 3: Cross multiply
    1,070,812.43x = 1,605,419.75 × 644,248.30
  4. Step 4: Simplify right side
    1,070,812.43x = 1,034,288,937,489.13
  5. Step 5: Solve for x
    x = 1,034,288,937,489.13/1,070,812.43
  6. Step 6: Final answer
    x = 965,891.79

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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.