Home / 712,218.56-982,864.48-389,958.65

Finding the Fourth Proportional to 712,218.56, 982,864.48 and 389,958.65

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Solution

The fourth proportional to 712,218.56, 982,864.48 and 389,958.65 is: 538,144.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,218.56 : 982,864.48 = 389,958.65 : x
  2. Step 2: Convert to fraction form
    712,218.56/982,864.48 = 389,958.65/x
  3. Step 3: Cross multiply
    712,218.56x = 982,864.48 × 389,958.65
  4. Step 4: Simplify right side
    712,218.56x = 383,276,500,839.43
  5. Step 5: Solve for x
    x = 383,276,500,839.43/712,218.56
  6. Step 6: Final answer
    x = 538,144.50

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1.5x scale

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.