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Finding the Fourth Proportional to 499,478.40, 749,217.60 and 495,979.20

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Solution

The fourth proportional to 499,478.40, 749,217.60 and 495,979.20 is: 743,968.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,478.40 : 749,217.60 = 495,979.20 : x
  2. Step 2: Convert to fraction form
    499,478.40/749,217.60 = 495,979.20/x
  3. Step 3: Cross multiply
    499,478.40x = 749,217.60 × 495,979.20
  4. Step 4: Simplify right side
    499,478.40x = 371,596,345,873.92
  5. Step 5: Solve for x
    x = 371,596,345,873.92/499,478.40
  6. Step 6: Final answer
    x = 743,968.80

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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.