Home / 1,103,363.20-1,655,044.80-393,414.40

Finding the Fourth Proportional to 1,103,363.20, 1,655,044.80 and 393,414.40

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Solution

The fourth proportional to 1,103,363.20, 1,655,044.80 and 393,414.40 is: 590,121.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,103,363.20 : 1,655,044.80 = 393,414.40 : x
  2. Step 2: Convert to fraction form
    1,103,363.20/1,655,044.80 = 393,414.40/x
  3. Step 3: Cross multiply
    1,103,363.20x = 1,655,044.80 × 393,414.40
  4. Step 4: Simplify right side
    1,103,363.20x = 651,118,456,965.12
  5. Step 5: Solve for x
    x = 651,118,456,965.12/1,103,363.20
  6. Step 6: Final answer
    x = 590,121.60

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Double scale
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Similar ratio
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1.5x scale

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.