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Finding the Fourth Proportional to 410,621.40, 615,413.70 and 363,965.40

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Solution

The fourth proportional to 410,621.40, 615,413.70 and 363,965.40 is: 545,488.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    410,621.40 : 615,413.70 = 363,965.40 : x
  2. Step 2: Convert to fraction form
    410,621.40/615,413.70 = 363,965.40/x
  3. Step 3: Cross multiply
    410,621.40x = 615,413.70 × 363,965.40
  4. Step 4: Simplify right side
    410,621.40x = 223,989,293,485.98
  5. Step 5: Solve for x
    x = 223,989,293,485.98/410,621.40
  6. Step 6: Final answer
    x = 545,488.60

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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.