Home / 781,543.56-1,078,530.12-442,004.52

Finding the Fourth Proportional to 781,543.56, 1,078,530.12 and 442,004.52

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Solution

The fourth proportional to 781,543.56, 1,078,530.12 and 442,004.52 is: 609,966.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,543.56 : 1,078,530.12 = 442,004.52 : x
  2. Step 2: Convert to fraction form
    781,543.56/1,078,530.12 = 442,004.52/x
  3. Step 3: Cross multiply
    781,543.56x = 1,078,530.12 × 442,004.52
  4. Step 4: Simplify right side
    781,543.56x = 476,715,187,996.14
  5. Step 5: Solve for x
    x = 476,715,187,996.14/781,543.56
  6. Step 6: Final answer
    x = 609,966.24

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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.