Home / 539,814.24-809,470.80-315,241.20

Finding the Fourth Proportional to 539,814.24, 809,470.80 and 315,241.20

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Solution

The fourth proportional to 539,814.24, 809,470.80 and 315,241.20 is: 472,715.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,814.24 : 809,470.80 = 315,241.20 : x
  2. Step 2: Convert to fraction form
    539,814.24/809,470.80 = 315,241.20/x
  3. Step 3: Cross multiply
    539,814.24x = 809,470.80 × 315,241.20
  4. Step 4: Simplify right side
    539,814.24x = 255,178,546,356.96
  5. Step 5: Solve for x
    x = 255,178,546,356.96/539,814.24
  6. Step 6: Final answer
    x = 472,715.48

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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.