Home / 656,991.31-984,208.78-431,667.13

Finding the Fourth Proportional to 656,991.31, 984,208.78 and 431,667.13

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Solution

The fourth proportional to 656,991.31, 984,208.78 and 431,667.13 is: 646,660.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,991.31 : 984,208.78 = 431,667.13 : x
  2. Step 2: Convert to fraction form
    656,991.31/984,208.78 = 431,667.13/x
  3. Step 3: Cross multiply
    656,991.31x = 984,208.78 × 431,667.13
  4. Step 4: Simplify right side
    656,991.31x = 424,850,577,225.07
  5. Step 5: Solve for x
    x = 424,850,577,225.07/656,991.31
  6. Step 6: Final answer
    x = 646,660.88

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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.