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Finding the Fourth Proportional to 664,413.70, 996,620.55 and 487,266.70

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Solution

The fourth proportional to 664,413.70, 996,620.55 and 487,266.70 is: 730,900.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,413.70 : 996,620.55 = 487,266.70 : x
  2. Step 2: Convert to fraction form
    664,413.70/996,620.55 = 487,266.70/x
  3. Step 3: Cross multiply
    664,413.70x = 996,620.55 × 487,266.70
  4. Step 4: Simplify right side
    664,413.70x = 485,620,006,550.69
  5. Step 5: Solve for x
    x = 485,620,006,550.69/664,413.70
  6. Step 6: Final answer
    x = 730,900.05

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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.