Home / 635,278.85-876,685.38-344,890.20

Finding the Fourth Proportional to 635,278.85, 876,685.38 and 344,890.20

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Solution

The fourth proportional to 635,278.85, 876,685.38 and 344,890.20 is: 475,948.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,278.85 : 876,685.38 = 344,890.20 : x
  2. Step 2: Convert to fraction form
    635,278.85/876,685.38 = 344,890.20/x
  3. Step 3: Cross multiply
    635,278.85x = 876,685.38 × 344,890.20
  4. Step 4: Simplify right side
    635,278.85x = 302,360,198,039.51
  5. Step 5: Solve for x
    x = 302,360,198,039.51/635,278.85
  6. Step 6: Final answer
    x = 475,948.79

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.