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Finding the Fourth Proportional to 547,555.96, 820,189.50 and 440,360.20

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Solution

The fourth proportional to 547,555.96, 820,189.50 and 440,360.20 is: 659,619.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,555.96 : 820,189.50 = 440,360.20 : x
  2. Step 2: Convert to fraction form
    547,555.96/820,189.50 = 440,360.20/x
  3. Step 3: Cross multiply
    547,555.96x = 820,189.50 × 440,360.20
  4. Step 4: Simplify right side
    547,555.96x = 361,178,812,257.90
  5. Step 5: Solve for x
    x = 361,178,812,257.90/547,555.96
  6. Step 6: Final answer
    x = 659,619.91

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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.