Home / 712,306.85-982,983.33-390,016.89

Finding the Fourth Proportional to 712,306.85, 982,983.33 and 390,016.89

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Solution

The fourth proportional to 712,306.85, 982,983.33 and 390,016.89 is: 538,223.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,306.85 : 982,983.33 = 390,016.89 : x
  2. Step 2: Convert to fraction form
    712,306.85/982,983.33 = 390,016.89/x
  3. Step 3: Cross multiply
    712,306.85x = 982,983.33 × 390,016.89
  4. Step 4: Simplify right side
    712,306.85x = 383,380,101,288.44
  5. Step 5: Solve for x
    x = 383,380,101,288.44/712,306.85
  6. Step 6: Final answer
    x = 538,223.24

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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.