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Finding the Fourth Proportional to 630,751.39, 871,575.53 and 449,148.04

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Solution

The fourth proportional to 630,751.39, 871,575.53 and 449,148.04 is: 620,635.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,751.39 : 871,575.53 = 449,148.04 : x
  2. Step 2: Convert to fraction form
    630,751.39/871,575.53 = 449,148.04/x
  3. Step 3: Cross multiply
    630,751.39x = 871,575.53 × 449,148.04
  4. Step 4: Simplify right side
    630,751.39x = 391,466,436,586.78
  5. Step 5: Solve for x
    x = 391,466,436,586.78/630,751.39
  6. Step 6: Final answer
    x = 620,635.08

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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.