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Finding the Fourth Proportional to 662,798.40, 994,975.20 and 658,132.80

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Solution

The fourth proportional to 662,798.40, 994,975.20 and 658,132.80 is: 987,971.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,798.40 : 994,975.20 = 658,132.80 : x
  2. Step 2: Convert to fraction form
    662,798.40/994,975.20 = 658,132.80/x
  3. Step 3: Cross multiply
    662,798.40x = 994,975.20 × 658,132.80
  4. Step 4: Simplify right side
    662,798.40x = 654,825,814,306.56
  5. Step 5: Solve for x
    x = 654,825,814,306.56/662,798.40
  6. Step 6: Final answer
    x = 987,971.33

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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.