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Finding the Fourth Proportional to 539,861.70, 810,522.15 and 315,452.10

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Solution

The fourth proportional to 539,861.70, 810,522.15 and 315,452.10 is: 473,604.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,861.70 : 810,522.15 = 315,452.10 : x
  2. Step 2: Convert to fraction form
    539,861.70/810,522.15 = 315,452.10/x
  3. Step 3: Cross multiply
    539,861.70x = 810,522.15 × 315,452.10
  4. Step 4: Simplify right side
    539,861.70x = 255,680,914,314.02
  5. Step 5: Solve for x
    x = 255,680,914,314.02/539,861.70
  6. Step 6: Final answer
    x = 473,604.47

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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.