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Finding the Fourth Proportional to 662,693.40, 994,040.10 and 618,078.60

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Solution

The fourth proportional to 662,693.40, 994,040.10 and 618,078.60 is: 927,117.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,693.40 : 994,040.10 = 618,078.60 : x
  2. Step 2: Convert to fraction form
    662,693.40/994,040.10 = 618,078.60/x
  3. Step 3: Cross multiply
    662,693.40x = 994,040.10 × 618,078.60
  4. Step 4: Simplify right side
    662,693.40x = 614,394,913,351.86
  5. Step 5: Solve for x
    x = 614,394,913,351.86/662,693.40
  6. Step 6: Final answer
    x = 927,117.90

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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.