Home / 1,338,721.13-2,008,081.70-341,449.13

Finding the Fourth Proportional to 1,338,721.13, 2,008,081.70 and 341,449.13

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Solution

The fourth proportional to 1,338,721.13, 2,008,081.70 and 341,449.13 is: 512,173.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,338,721.13 : 2,008,081.70 = 341,449.13 : x
  2. Step 2: Convert to fraction form
    1,338,721.13/2,008,081.70 = 341,449.13/x
  3. Step 3: Cross multiply
    1,338,721.13x = 2,008,081.70 × 341,449.13
  4. Step 4: Simplify right side
    1,338,721.13x = 685,657,737,686.27
  5. Step 5: Solve for x
    x = 685,657,737,686.27/1,338,721.13
  6. Step 6: Final answer
    x = 512,173.69

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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.