Home / 1,188,143.86-1,781,504.02-378,178.40

Finding the Fourth Proportional to 1,188,143.86, 1,781,504.02 and 378,178.40

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Solution

The fourth proportional to 1,188,143.86, 1,781,504.02 and 378,178.40 is: 567,041.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,143.86 : 1,781,504.02 = 378,178.40 : x
  2. Step 2: Convert to fraction form
    1,188,143.86/1,781,504.02 = 378,178.40/x
  3. Step 3: Cross multiply
    1,188,143.86x = 1,781,504.02 × 378,178.40
  4. Step 4: Simplify right side
    1,188,143.86x = 673,726,339,877.17
  5. Step 5: Solve for x
    x = 673,726,339,877.17/1,188,143.86
  6. Step 6: Final answer
    x = 567,041.05

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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.