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Finding the Fourth Proportional to 999,171.72, 1,378,867.86 and 546,453

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Solution

The fourth proportional to 999,171.72, 1,378,867.86 and 546,453 is: 754,111.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    999,171.72 : 1,378,867.86 = 546,453 : x
  2. Step 2: Convert to fraction form
    999,171.72/1,378,867.86 = 546,453/x
  3. Step 3: Cross multiply
    999,171.72x = 1,378,867.86 × 546,453
  4. Step 4: Simplify right side
    999,171.72x = 753,486,478,700.58
  5. Step 5: Solve for x
    x = 753,486,478,700.58/999,171.72
  6. Step 6: Final answer
    x = 754,111.09

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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.