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Finding the Fourth Proportional to 518,901.60, 777,769.20 and 266,084.40

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Solution

The fourth proportional to 518,901.60, 777,769.20 and 266,084.40 is: 398,827.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,901.60 : 777,769.20 = 266,084.40 : x
  2. Step 2: Convert to fraction form
    518,901.60/777,769.20 = 266,084.40/x
  3. Step 3: Cross multiply
    518,901.60x = 777,769.20 × 266,084.40
  4. Step 4: Simplify right side
    518,901.60x = 206,952,250,920.48
  5. Step 5: Solve for x
    x = 206,952,250,920.48/518,901.60
  6. Step 6: Final answer
    x = 398,827.54

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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.