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Finding the Fourth Proportional to 822,626.70, 1,234,328.85 and 349,716.30

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Solution

The fourth proportional to 822,626.70, 1,234,328.85 and 349,716.30 is: 524,739.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    822,626.70 : 1,234,328.85 = 349,716.30 : x
  2. Step 2: Convert to fraction form
    822,626.70/1,234,328.85 = 349,716.30/x
  3. Step 3: Cross multiply
    822,626.70x = 1,234,328.85 × 349,716.30
  4. Step 4: Simplify right side
    822,626.70x = 431,664,918,405.26
  5. Step 5: Solve for x
    x = 431,664,918,405.26/822,626.70
  6. Step 6: Final answer
    x = 524,739.74

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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.