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Finding the Fourth Proportional to 992,713.20, 1,489,069.80 and 714,850.80

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Solution

The fourth proportional to 992,713.20, 1,489,069.80 and 714,850.80 is: 1,072,276.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    992,713.20 : 1,489,069.80 = 714,850.80 : x
  2. Step 2: Convert to fraction form
    992,713.20/1,489,069.80 = 714,850.80/x
  3. Step 3: Cross multiply
    992,713.20x = 1,489,069.80 × 714,850.80
  4. Step 4: Simplify right side
    992,713.20x = 1,064,462,737,785.84
  5. Step 5: Solve for x
    x = 1,064,462,737,785.84/992,713.20
  6. Step 6: Final answer
    x = 1,072,276.20

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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.