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Finding the Fourth Proportional to 986,209.80, 1,479,897.90 and 650,221.80

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Solution

The fourth proportional to 986,209.80, 1,479,897.90 and 650,221.80 is: 975,717.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    986,209.80 : 1,479,897.90 = 650,221.80 : x
  2. Step 2: Convert to fraction form
    986,209.80/1,479,897.90 = 650,221.80/x
  3. Step 3: Cross multiply
    986,209.80x = 1,479,897.90 × 650,221.80
  4. Step 4: Simplify right side
    986,209.80x = 962,261,876,354.22
  5. Step 5: Solve for x
    x = 962,261,876,354.22/986,209.80
  6. Step 6: Final answer
    x = 975,717.21

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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.