Home / 691,261.90-1,036,892.85-407,826.70

Finding the Fourth Proportional to 691,261.90, 1,036,892.85 and 407,826.70

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Solution

The fourth proportional to 691,261.90, 1,036,892.85 and 407,826.70 is: 611,740.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,261.90 : 1,036,892.85 = 407,826.70 : x
  2. Step 2: Convert to fraction form
    691,261.90/1,036,892.85 = 407,826.70/x
  3. Step 3: Cross multiply
    691,261.90x = 1,036,892.85 × 407,826.70
  4. Step 4: Simplify right side
    691,261.90x = 422,872,589,269.10
  5. Step 5: Solve for x
    x = 422,872,589,269.10/691,261.90
  6. Step 6: Final answer
    x = 611,740.05

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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.