Home / 823,138.20-1,234,806.12-290,550.24

Finding the Fourth Proportional to 823,138.20, 1,234,806.12 and 290,550.24

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Solution

The fourth proportional to 823,138.20, 1,234,806.12 and 290,550.24 is: 435,860.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    823,138.20 : 1,234,806.12 = 290,550.24 : x
  2. Step 2: Convert to fraction form
    823,138.20/1,234,806.12 = 290,550.24/x
  3. Step 3: Cross multiply
    823,138.20x = 1,234,806.12 × 290,550.24
  4. Step 4: Simplify right side
    823,138.20x = 358,773,214,519.47
  5. Step 5: Solve for x
    x = 358,773,214,519.47/823,138.20
  6. Step 6: Final answer
    x = 435,860.24

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Half scale
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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.