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Finding the Fourth Proportional to 866,902.88, 1,195,686.96 and 625,980.80

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Solution

The fourth proportional to 866,902.88, 1,195,686.96 and 625,980.80 is: 863,392.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,902.88 : 1,195,686.96 = 625,980.80 : x
  2. Step 2: Convert to fraction form
    866,902.88/1,195,686.96 = 625,980.80/x
  3. Step 3: Cross multiply
    866,902.88x = 1,195,686.96 × 625,980.80
  4. Step 4: Simplify right side
    866,902.88x = 748,477,079,770.37
  5. Step 5: Solve for x
    x = 748,477,079,770.37/866,902.88
  6. Step 6: Final answer
    x = 863,392.08

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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.