Home / 1,188,142.36-1,781,501.78-378,176.89

Finding the Fourth Proportional to 1,188,142.36, 1,781,501.78 and 378,176.89

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Solution

The fourth proportional to 1,188,142.36, 1,781,501.78 and 378,176.89 is: 567,038.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,142.36 : 1,781,501.78 = 378,176.89 : x
  2. Step 2: Convert to fraction form
    1,188,142.36/1,781,501.78 = 378,176.89/x
  3. Step 3: Cross multiply
    1,188,142.36x = 1,781,501.78 × 378,176.89
  4. Step 4: Simplify right side
    1,188,142.36x = 673,722,802,689.86
  5. Step 5: Solve for x
    x = 673,722,802,689.86/1,188,142.36
  6. Step 6: Final answer
    x = 567,038.79

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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.