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Finding the Fourth Proportional to 478,337.79, 717,507.60 and 449,108.54

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Solution

The fourth proportional to 478,337.79, 717,507.60 and 449,108.54 is: 673,663.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,337.79 : 717,507.60 = 449,108.54 : x
  2. Step 2: Convert to fraction form
    478,337.79/717,507.60 = 449,108.54/x
  3. Step 3: Cross multiply
    478,337.79x = 717,507.60 × 449,108.54
  4. Step 4: Simplify right side
    478,337.79x = 322,238,790,674.90
  5. Step 5: Solve for x
    x = 322,238,790,674.90/478,337.79
  6. Step 6: Final answer
    x = 673,663.67

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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.