Home / 1,207,443.20-1,811,164.80-320,979.20

Finding the Fourth Proportional to 1,207,443.20, 1,811,164.80 and 320,979.20

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Solution

The fourth proportional to 1,207,443.20, 1,811,164.80 and 320,979.20 is: 481,468.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,207,443.20 : 1,811,164.80 = 320,979.20 : x
  2. Step 2: Convert to fraction form
    1,207,443.20/1,811,164.80 = 320,979.20/x
  3. Step 3: Cross multiply
    1,207,443.20x = 1,811,164.80 × 320,979.20
  4. Step 4: Simplify right side
    1,207,443.20x = 581,346,228,572.16
  5. Step 5: Solve for x
    x = 581,346,228,572.16/1,207,443.20
  6. Step 6: Final answer
    x = 481,468.80

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Double scale
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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.