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Finding the Fourth Proportional to 548,509.70, 822,764.55 and 499,520.90

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Solution

The fourth proportional to 548,509.70, 822,764.55 and 499,520.90 is: 749,281.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,509.70 : 822,764.55 = 499,520.90 : x
  2. Step 2: Convert to fraction form
    548,509.70/822,764.55 = 499,520.90/x
  3. Step 3: Cross multiply
    548,509.70x = 822,764.55 × 499,520.90
  4. Step 4: Simplify right side
    548,509.70x = 410,988,088,504.10
  5. Step 5: Solve for x
    x = 410,988,088,504.10/548,509.70
  6. Step 6: Final answer
    x = 749,281.35

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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.