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Finding the Fourth Proportional to 498,413.70, 747,729.90 and 245,815.20

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Solution

The fourth proportional to 498,413.70, 747,729.90 and 245,815.20 is: 368,776.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,413.70 : 747,729.90 = 245,815.20 : x
  2. Step 2: Convert to fraction form
    498,413.70/747,729.90 = 245,815.20/x
  3. Step 3: Cross multiply
    498,413.70x = 747,729.90 × 245,815.20
  4. Step 4: Simplify right side
    498,413.70x = 183,803,374,914.48
  5. Step 5: Solve for x
    x = 183,803,374,914.48/498,413.70
  6. Step 6: Final answer
    x = 368,776.73

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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.