Home / 831,792.20-1,248,120.30-388,560.20

Finding the Fourth Proportional to 831,792.20, 1,248,120.30 and 388,560.20

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Solution

The fourth proportional to 831,792.20, 1,248,120.30 and 388,560.20 is: 583,042.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,792.20 : 1,248,120.30 = 388,560.20 : x
  2. Step 2: Convert to fraction form
    831,792.20/1,248,120.30 = 388,560.20/x
  3. Step 3: Cross multiply
    831,792.20x = 1,248,120.30 × 388,560.20
  4. Step 4: Simplify right side
    831,792.20x = 484,969,873,392.06
  5. Step 5: Solve for x
    x = 484,969,873,392.06/831,792.20
  6. Step 6: Final answer
    x = 583,042.10

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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.