Home / 854,785.80-1,282,178.70-412,417.80

Finding the Fourth Proportional to 854,785.80, 1,282,178.70 and 412,417.80

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Solution

The fourth proportional to 854,785.80, 1,282,178.70 and 412,417.80 is: 618,626.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    854,785.80 : 1,282,178.70 = 412,417.80 : x
  2. Step 2: Convert to fraction form
    854,785.80/1,282,178.70 = 412,417.80/x
  3. Step 3: Cross multiply
    854,785.80x = 1,282,178.70 × 412,417.80
  4. Step 4: Simplify right side
    854,785.80x = 528,793,318,660.86
  5. Step 5: Solve for x
    x = 528,793,318,660.86/854,785.80
  6. Step 6: Final answer
    x = 618,626.70

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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.