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Finding the Fourth Proportional to 659,776.84, 911,346.16 and 488,043.88

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Solution

The fourth proportional to 659,776.84, 911,346.16 and 488,043.88 is: 674,132.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,776.84 : 911,346.16 = 488,043.88 : x
  2. Step 2: Convert to fraction form
    659,776.84/911,346.16 = 488,043.88/x
  3. Step 3: Cross multiply
    659,776.84x = 911,346.16 × 488,043.88
  4. Step 4: Simplify right side
    659,776.84x = 444,776,915,949.50
  5. Step 5: Solve for x
    x = 444,776,915,949.50/659,776.84
  6. Step 6: Final answer
    x = 674,132.36

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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.