Home / 1,280,490.60-1,920,833.10-381,862.20

Finding the Fourth Proportional to 1,280,490.60, 1,920,833.10 and 381,862.20

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Solution

The fourth proportional to 1,280,490.60, 1,920,833.10 and 381,862.20 is: 572,822.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,490.60 : 1,920,833.10 = 381,862.20 : x
  2. Step 2: Convert to fraction form
    1,280,490.60/1,920,833.10 = 381,862.20/x
  3. Step 3: Cross multiply
    1,280,490.60x = 1,920,833.10 × 381,862.20
  4. Step 4: Simplify right side
    1,280,490.60x = 733,493,553,398.82
  5. Step 5: Solve for x
    x = 733,493,553,398.82/1,280,490.60
  6. Step 6: Final answer
    x = 572,822.29

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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.