Home / 1,191,279.86-1,786,938.30-381,816.50

Finding the Fourth Proportional to 1,191,279.86, 1,786,938.30 and 381,816.50

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Solution

The fourth proportional to 1,191,279.86, 1,786,938.30 and 381,816.50 is: 572,730.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,191,279.86 : 1,786,938.30 = 381,816.50 : x
  2. Step 2: Convert to fraction form
    1,191,279.86/1,786,938.30 = 381,816.50/x
  3. Step 3: Cross multiply
    1,191,279.86x = 1,786,938.30 × 381,816.50
  4. Step 4: Simplify right side
    1,191,279.86x = 682,282,527,421.95
  5. Step 5: Solve for x
    x = 682,282,527,421.95/1,191,279.86
  6. Step 6: Final answer
    x = 572,730.68

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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.