Home / 423,819.42-635,138.01-318,515.10

Finding the Fourth Proportional to 423,819.42, 635,138.01 and 318,515.10

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Solution

The fourth proportional to 423,819.42, 635,138.01 and 318,515.10 is: 477,328.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,819.42 : 635,138.01 = 318,515.10 : x
  2. Step 2: Convert to fraction form
    423,819.42/635,138.01 = 318,515.10/x
  3. Step 3: Cross multiply
    423,819.42x = 635,138.01 × 318,515.10
  4. Step 4: Simplify right side
    423,819.42x = 202,301,046,768.95
  5. Step 5: Solve for x
    x = 202,301,046,768.95/423,819.42
  6. Step 6: Final answer
    x = 477,328.40

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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.