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Finding the Fourth Proportional to 662,390.88, 990,534.24 and 491,934.48

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Solution

The fourth proportional to 662,390.88, 990,534.24 and 491,934.48 is: 735,635.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,390.88 : 990,534.24 = 491,934.48 : x
  2. Step 2: Convert to fraction form
    662,390.88/990,534.24 = 491,934.48/x
  3. Step 3: Cross multiply
    662,390.88x = 990,534.24 × 491,934.48
  4. Step 4: Simplify right side
    662,390.88x = 487,277,946,276.60
  5. Step 5: Solve for x
    x = 487,277,946,276.60/662,390.88
  6. Step 6: Final answer
    x = 735,635.05

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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.