Home / 1,112,213.78-1,668,408.18-438,248.42

Finding the Fourth Proportional to 1,112,213.78, 1,668,408.18 and 438,248.42

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Solution

The fourth proportional to 1,112,213.78, 1,668,408.18 and 438,248.42 is: 657,407.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,112,213.78 : 1,668,408.18 = 438,248.42 : x
  2. Step 2: Convert to fraction form
    1,112,213.78/1,668,408.18 = 438,248.42/x
  3. Step 3: Cross multiply
    1,112,213.78x = 1,668,408.18 × 438,248.42
  4. Step 4: Simplify right side
    1,112,213.78x = 731,177,248,800.08
  5. Step 5: Solve for x
    x = 731,177,248,800.08/1,112,213.78
  6. Step 6: Final answer
    x = 657,407.11

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Double scale
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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.