Home / 1,121,165.28-1,681,845.12-322,511.76

Finding the Fourth Proportional to 1,121,165.28, 1,681,845.12 and 322,511.76

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Solution

The fourth proportional to 1,121,165.28, 1,681,845.12 and 322,511.76 is: 483,795.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,165.28 : 1,681,845.12 = 322,511.76 : x
  2. Step 2: Convert to fraction form
    1,121,165.28/1,681,845.12 = 322,511.76/x
  3. Step 3: Cross multiply
    1,121,165.28x = 1,681,845.12 × 322,511.76
  4. Step 4: Simplify right side
    1,121,165.28x = 542,414,829,698.61
  5. Step 5: Solve for x
    x = 542,414,829,698.61/1,121,165.28
  6. Step 6: Final answer
    x = 483,795.60

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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.