Home / 712,111.20-1,066,784.40-396,002.40

Finding the Fourth Proportional to 712,111.20, 1,066,784.40 and 396,002.40

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Solution

The fourth proportional to 712,111.20, 1,066,784.40 and 396,002.40 is: 593,234.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,111.20 : 1,066,784.40 = 396,002.40 : x
  2. Step 2: Convert to fraction form
    712,111.20/1,066,784.40 = 396,002.40/x
  3. Step 3: Cross multiply
    712,111.20x = 1,066,784.40 × 396,002.40
  4. Step 4: Simplify right side
    712,111.20x = 422,449,182,682.56
  5. Step 5: Solve for x
    x = 422,449,182,682.56/712,111.20
  6. Step 6: Final answer
    x = 593,234.85

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Double scale
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Similar ratio
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1.5x scale

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.