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Finding the Fourth Proportional to 542,608.40, 813,718.20 and 276,280.40

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Solution

The fourth proportional to 542,608.40, 813,718.20 and 276,280.40 is: 414,321.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,608.40 : 813,718.20 = 276,280.40 : x
  2. Step 2: Convert to fraction form
    542,608.40/813,718.20 = 276,280.40/x
  3. Step 3: Cross multiply
    542,608.40x = 813,718.20 × 276,280.40
  4. Step 4: Simplify right side
    542,608.40x = 224,814,389,783.28
  5. Step 5: Solve for x
    x = 224,814,389,783.28/542,608.40
  6. Step 6: Final answer
    x = 414,321.62

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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.