Home / 870,988.24-1,306,481.86-272,000.72

Finding the Fourth Proportional to 870,988.24, 1,306,481.86 and 272,000.72

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Solution

The fourth proportional to 870,988.24, 1,306,481.86 and 272,000.72 is: 408,000.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,988.24 : 1,306,481.86 = 272,000.72 : x
  2. Step 2: Convert to fraction form
    870,988.24/1,306,481.86 = 272,000.72/x
  3. Step 3: Cross multiply
    870,988.24x = 1,306,481.86 × 272,000.72
  4. Step 4: Simplify right side
    870,988.24x = 355,364,006,586.94
  5. Step 5: Solve for x
    x = 355,364,006,586.94/870,988.24
  6. Step 6: Final answer
    x = 408,000.92

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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.