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Finding the Fourth Proportional to 659,775.84, 911,344.78 and 488,042.88

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Solution

The fourth proportional to 659,775.84, 911,344.78 and 488,042.88 is: 674,130.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,775.84 : 911,344.78 = 488,042.88 : x
  2. Step 2: Convert to fraction form
    659,775.84/911,344.78 = 488,042.88/x
  3. Step 3: Cross multiply
    659,775.84x = 911,344.78 × 488,042.88
  4. Step 4: Simplify right side
    659,775.84x = 444,775,331,104.17
  5. Step 5: Solve for x
    x = 444,775,331,104.17/659,775.84
  6. Step 6: Final answer
    x = 674,130.98

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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.