Home / 1,188,114.10-1,782,171.15-389,421.70

Finding the Fourth Proportional to 1,188,114.10, 1,782,171.15 and 389,421.70

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Solution

The fourth proportional to 1,188,114.10, 1,782,171.15 and 389,421.70 is: 584,132.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,114.10 : 1,782,171.15 = 389,421.70 : x
  2. Step 2: Convert to fraction form
    1,188,114.10/1,782,171.15 = 389,421.70/x
  3. Step 3: Cross multiply
    1,188,114.10x = 1,782,171.15 × 389,421.70
  4. Step 4: Simplify right side
    1,188,114.10x = 694,016,118,923.96
  5. Step 5: Solve for x
    x = 694,016,118,923.96/1,188,114.10
  6. Step 6: Final answer
    x = 584,132.55

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Double scale
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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.