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Finding the Fourth Proportional to 662,655.40, 994,760.70 and 657,989.80

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Solution

The fourth proportional to 662,655.40, 994,760.70 and 657,989.80 is: 987,756.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,655.40 : 994,760.70 = 657,989.80 : x
  2. Step 2: Convert to fraction form
    662,655.40/994,760.70 = 657,989.80/x
  3. Step 3: Cross multiply
    662,655.40x = 994,760.70 × 657,989.80
  4. Step 4: Simplify right side
    662,655.40x = 654,542,394,040.86
  5. Step 5: Solve for x
    x = 654,542,394,040.86/662,655.40
  6. Step 6: Final answer
    x = 987,756.83

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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.