Home / 805,217.20-1,207,825.80-539,796.40

Finding the Fourth Proportional to 805,217.20, 1,207,825.80 and 539,796.40

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Solution

The fourth proportional to 805,217.20, 1,207,825.80 and 539,796.40 is: 809,694.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,217.20 : 1,207,825.80 = 539,796.40 : x
  2. Step 2: Convert to fraction form
    805,217.20/1,207,825.80 = 539,796.40/x
  3. Step 3: Cross multiply
    805,217.20x = 1,207,825.80 × 539,796.40
  4. Step 4: Simplify right side
    805,217.20x = 651,980,018,667.12
  5. Step 5: Solve for x
    x = 651,980,018,667.12/805,217.20
  6. Step 6: Final answer
    x = 809,694.60

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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.