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Finding the Fourth Proportional to 659,885.13, 910,660.66 and 373,399.07

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Solution

The fourth proportional to 659,885.13, 910,660.66 and 373,399.07 is: 515,301.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,885.13 : 910,660.66 = 373,399.07 : x
  2. Step 2: Convert to fraction form
    659,885.13/910,660.66 = 373,399.07/x
  3. Step 3: Cross multiply
    659,885.13x = 910,660.66 × 373,399.07
  4. Step 4: Simplify right side
    659,885.13x = 340,039,838,042.79
  5. Step 5: Solve for x
    x = 340,039,838,042.79/659,885.13
  6. Step 6: Final answer
    x = 515,301.56

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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.