Home / 3,191,129.76-4,786,657.92-916,709.88

Finding the Fourth Proportional to 3,191,129.76, 4,786,657.92 and 916,709.88

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Solution

The fourth proportional to 3,191,129.76, 4,786,657.92 and 916,709.88 is: 1,375,054.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,191,129.76 : 4,786,657.92 = 916,709.88 : x
  2. Step 2: Convert to fraction form
    3,191,129.76/4,786,657.92 = 916,709.88/x
  3. Step 3: Cross multiply
    3,191,129.76x = 4,786,657.92 × 916,709.88
  4. Step 4: Simplify right side
    3,191,129.76x = 4,387,976,607,444.25
  5. Step 5: Solve for x
    x = 4,387,976,607,444.25/3,191,129.76
  6. Step 6: Final answer
    x = 1,375,054.27

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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.