Home / 728,981.92-1,005,972.24-427,376.80

Finding the Fourth Proportional to 728,981.92, 1,005,972.24 and 427,376.80

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Solution

The fourth proportional to 728,981.92, 1,005,972.24 and 427,376.80 is: 589,766.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,981.92 : 1,005,972.24 = 427,376.80 : x
  2. Step 2: Convert to fraction form
    728,981.92/1,005,972.24 = 427,376.80/x
  3. Step 3: Cross multiply
    728,981.92x = 1,005,972.24 × 427,376.80
  4. Step 4: Simplify right side
    728,981.92x = 429,929,196,820.03
  5. Step 5: Solve for x
    x = 429,929,196,820.03/728,981.92
  6. Step 6: Final answer
    x = 589,766.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.