Home / 715,264.80-1,072,022.40-315,481.20

Finding the Fourth Proportional to 715,264.80, 1,072,022.40 and 315,481.20

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Solution

The fourth proportional to 715,264.80, 1,072,022.40 and 315,481.20 is: 472,835.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,264.80 : 1,072,022.40 = 315,481.20 : x
  2. Step 2: Convert to fraction form
    715,264.80/1,072,022.40 = 315,481.20/x
  3. Step 3: Cross multiply
    715,264.80x = 1,072,022.40 × 315,481.20
  4. Step 4: Simplify right side
    715,264.80x = 338,202,913,178.88
  5. Step 5: Solve for x
    x = 338,202,913,178.88/715,264.80
  6. Step 6: Final answer
    x = 472,835.95

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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.