Home / 457,968.20-686,952.30-408,979.40

Finding the Fourth Proportional to 457,968.20, 686,952.30 and 408,979.40

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Solution

The fourth proportional to 457,968.20, 686,952.30 and 408,979.40 is: 613,469.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,968.20 : 686,952.30 = 408,979.40 : x
  2. Step 2: Convert to fraction form
    457,968.20/686,952.30 = 408,979.40/x
  3. Step 3: Cross multiply
    457,968.20x = 686,952.30 × 408,979.40
  4. Step 4: Simplify right side
    457,968.20x = 280,949,339,482.62
  5. Step 5: Solve for x
    x = 280,949,339,482.62/457,968.20
  6. Step 6: Final answer
    x = 613,469.10

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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.