Home / 539,861.20-810,521.40-315,451.60

Finding the Fourth Proportional to 539,861.20, 810,521.40 and 315,451.60

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Solution

The fourth proportional to 539,861.20, 810,521.40 and 315,451.60 is: 473,603.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,861.20 : 810,521.40 = 315,451.60 : x
  2. Step 2: Convert to fraction form
    539,861.20/810,521.40 = 315,451.60/x
  3. Step 3: Cross multiply
    539,861.20x = 810,521.40 × 315,451.60
  4. Step 4: Simplify right side
    539,861.20x = 255,680,272,464.24
  5. Step 5: Solve for x
    x = 255,680,272,464.24/539,861.20
  6. Step 6: Final answer
    x = 473,603.72

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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.