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Finding the Fourth Proportional to 542,856.80, 814,285.20 and 454,939.40

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Solution

The fourth proportional to 542,856.80, 814,285.20 and 454,939.40 is: 682,409.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,856.80 : 814,285.20 = 454,939.40 : x
  2. Step 2: Convert to fraction form
    542,856.80/814,285.20 = 454,939.40/x
  3. Step 3: Cross multiply
    542,856.80x = 814,285.20 × 454,939.40
  4. Step 4: Simplify right side
    542,856.80x = 370,450,420,316.88
  5. Step 5: Solve for x
    x = 370,450,420,316.88/542,856.80
  6. Step 6: Final answer
    x = 682,409.10

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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.