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Finding the Fourth Proportional to 500,750.65, 690,659.18 and 347,789.03

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Solution

The fourth proportional to 500,750.65, 690,659.18 and 347,789.03 is: 479,687.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,750.65 : 690,659.18 = 347,789.03 : x
  2. Step 2: Convert to fraction form
    500,750.65/690,659.18 = 347,789.03/x
  3. Step 3: Cross multiply
    500,750.65x = 690,659.18 × 347,789.03
  4. Step 4: Simplify right side
    500,750.65x = 240,203,686,260.50
  5. Step 5: Solve for x
    x = 240,203,686,260.50/500,750.65
  6. Step 6: Final answer
    x = 479,687.22

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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.