Home / 855,396.20-1,281,711.90-539,287.40

Finding the Fourth Proportional to 855,396.20, 1,281,711.90 and 539,287.40

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Solution

The fourth proportional to 855,396.20, 1,281,711.90 and 539,287.40 is: 808,059.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,396.20 : 1,281,711.90 = 539,287.40 : x
  2. Step 2: Convert to fraction form
    855,396.20/1,281,711.90 = 539,287.40/x
  3. Step 3: Cross multiply
    855,396.20x = 1,281,711.90 × 539,287.40
  4. Step 4: Simplify right side
    855,396.20x = 691,211,078,100.06
  5. Step 5: Solve for x
    x = 691,211,078,100.06/855,396.20
  6. Step 6: Final answer
    x = 808,059.56

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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.