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Finding the Fourth Proportional to 1,179,982.86, 1,769,984.54 and 381,264.50

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Solution

The fourth proportional to 1,179,982.86, 1,769,984.54 and 381,264.50 is: 571,900.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,179,982.86 : 1,769,984.54 = 381,264.50 : x
  2. Step 2: Convert to fraction form
    1,179,982.86/1,769,984.54 = 381,264.50/x
  3. Step 3: Cross multiply
    1,179,982.86x = 1,769,984.54 × 381,264.50
  4. Step 4: Simplify right side
    1,179,982.86x = 674,832,270,650.83
  5. Step 5: Solve for x
    x = 674,832,270,650.83/1,179,982.86
  6. Step 6: Final answer
    x = 571,900.06

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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.