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Finding the Fourth Proportional to 664,275.80, 996,413.70 and 658,370.90

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Solution

The fourth proportional to 664,275.80, 996,413.70 and 658,370.90 is: 987,556.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,275.80 : 996,413.70 = 658,370.90 : x
  2. Step 2: Convert to fraction form
    664,275.80/996,413.70 = 658,370.90/x
  3. Step 3: Cross multiply
    664,275.80x = 996,413.70 × 658,370.90
  4. Step 4: Simplify right side
    664,275.80x = 656,009,784,441.33
  5. Step 5: Solve for x
    x = 656,009,784,441.33/664,275.80
  6. Step 6: Final answer
    x = 987,556.35

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Similar ratio
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1.5x scale

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.