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Finding the Fourth Proportional to 458,499.72, 686,854.85 and 300,248.40

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Solution

The fourth proportional to 458,499.72, 686,854.85 and 300,248.40 is: 449,786.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,499.72 : 686,854.85 = 300,248.40 : x
  2. Step 2: Convert to fraction form
    458,499.72/686,854.85 = 300,248.40/x
  3. Step 3: Cross multiply
    458,499.72x = 686,854.85 × 300,248.40
  4. Step 4: Simplify right side
    458,499.72x = 206,227,068,243.50
  5. Step 5: Solve for x
    x = 206,227,068,243.50/458,499.72
  6. Step 6: Final answer
    x = 449,786.68

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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.