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Finding the Fourth Proportional to 402,635.40, 603,224.10 and 318,946.20

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Solution

The fourth proportional to 402,635.40, 603,224.10 and 318,946.20 is: 477,841.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,635.40 : 603,224.10 = 318,946.20 : x
  2. Step 2: Convert to fraction form
    402,635.40/603,224.10 = 318,946.20/x
  3. Step 3: Cross multiply
    402,635.40x = 603,224.10 × 318,946.20
  4. Step 4: Simplify right side
    402,635.40x = 192,396,034,443.42
  5. Step 5: Solve for x
    x = 192,396,034,443.42/402,635.40
  6. Step 6: Final answer
    x = 477,841.83

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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.