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Finding the Fourth Proportional to 712,001.88, 982,672.56 and 406,078.92

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Solution

The fourth proportional to 712,001.88, 982,672.56 and 406,078.92 is: 560,451.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,001.88 : 982,672.56 = 406,078.92 : x
  2. Step 2: Convert to fraction form
    712,001.88/982,672.56 = 406,078.92/x
  3. Step 3: Cross multiply
    712,001.88x = 982,672.56 × 406,078.92
  4. Step 4: Simplify right side
    712,001.88x = 399,042,611,878.44
  5. Step 5: Solve for x
    x = 399,042,611,878.44/712,001.88
  6. Step 6: Final answer
    x = 560,451.63

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1.5x scale

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.