Home / 720,126.92-1,079,940.12-400,766.12

Finding the Fourth Proportional to 720,126.92, 1,079,940.12 and 400,766.12

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Solution

The fourth proportional to 720,126.92, 1,079,940.12 and 400,766.12 is: 601,009.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,126.92 : 1,079,940.12 = 400,766.12 : x
  2. Step 2: Convert to fraction form
    720,126.92/1,079,940.12 = 400,766.12/x
  3. Step 3: Cross multiply
    720,126.92x = 1,079,940.12 × 400,766.12
  4. Step 4: Simplify right side
    720,126.92x = 432,803,411,724.73
  5. Step 5: Solve for x
    x = 432,803,411,724.73/720,126.92
  6. Step 6: Final answer
    x = 601,009.90

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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.