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Finding the Fourth Proportional to 451,498.68, 677,360.72 and 318,638.43

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Solution

The fourth proportional to 451,498.68, 677,360.72 and 318,638.43 is: 478,037.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,498.68 : 677,360.72 = 318,638.43 : x
  2. Step 2: Convert to fraction form
    451,498.68/677,360.72 = 318,638.43/x
  3. Step 3: Cross multiply
    451,498.68x = 677,360.72 × 318,638.43
  4. Step 4: Simplify right side
    451,498.68x = 215,833,157,161.07
  5. Step 5: Solve for x
    x = 215,833,157,161.07/451,498.68
  6. Step 6: Final answer
    x = 478,037.18

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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.