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Finding the Fourth Proportional to 498,425.40, 747,638.10 and 299,359.80

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Solution

The fourth proportional to 498,425.40, 747,638.10 and 299,359.80 is: 449,039.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,425.40 : 747,638.10 = 299,359.80 : x
  2. Step 2: Convert to fraction form
    498,425.40/747,638.10 = 299,359.80/x
  3. Step 3: Cross multiply
    498,425.40x = 747,638.10 × 299,359.80
  4. Step 4: Simplify right side
    498,425.40x = 223,812,792,088.38
  5. Step 5: Solve for x
    x = 223,812,792,088.38/498,425.40
  6. Step 6: Final answer
    x = 449,039.70

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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.