Home / 664,318.79-916,789.10-373,949.09

Finding the Fourth Proportional to 664,318.79, 916,789.10 and 373,949.09

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Solution

The fourth proportional to 664,318.79, 916,789.10 and 373,949.09 is: 516,066.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,318.79 : 916,789.10 = 373,949.09 : x
  2. Step 2: Convert to fraction form
    664,318.79/916,789.10 = 373,949.09/x
  3. Step 3: Cross multiply
    664,318.79x = 916,789.10 × 373,949.09
  4. Step 4: Simplify right side
    664,318.79x = 342,832,449,666.92
  5. Step 5: Solve for x
    x = 342,832,449,666.92/664,318.79
  6. Step 6: Final answer
    x = 516,066.16

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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.