Home / 1,188,128.18-1,781,480.54-378,162.74

Finding the Fourth Proportional to 1,188,128.18, 1,781,480.54 and 378,162.74

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Solution

The fourth proportional to 1,188,128.18, 1,781,480.54 and 378,162.74 is: 567,017.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,128.18 : 1,781,480.54 = 378,162.74 : x
  2. Step 2: Convert to fraction form
    1,188,128.18/1,781,480.54 = 378,162.74/x
  3. Step 3: Cross multiply
    1,188,128.18x = 1,781,480.54 × 378,162.74
  4. Step 4: Simplify right side
    1,188,128.18x = 673,689,551,464.86
  5. Step 5: Solve for x
    x = 673,689,551,464.86/1,188,128.18
  6. Step 6: Final answer
    x = 567,017.57

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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.