Home / 870,989.24-1,306,483.36-272,001.72

Finding the Fourth Proportional to 870,989.24, 1,306,483.36 and 272,001.72

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Solution

The fourth proportional to 870,989.24, 1,306,483.36 and 272,001.72 is: 408,002.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,989.24 : 1,306,483.36 = 272,001.72 : x
  2. Step 2: Convert to fraction form
    870,989.24/1,306,483.36 = 272,001.72/x
  3. Step 3: Cross multiply
    870,989.24x = 1,306,483.36 × 272,001.72
  4. Step 4: Simplify right side
    870,989.24x = 355,365,721,071.38
  5. Step 5: Solve for x
    x = 355,365,721,071.38/870,989.24
  6. Step 6: Final answer
    x = 408,002.42

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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.