Home / 5,120,077.91-7,680,412.12-1,925,231.77

Finding the Fourth Proportional to 5,120,077.91, 7,680,412.12 and 1,925,231.77

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Solution

The fourth proportional to 5,120,077.91, 7,680,412.12 and 1,925,231.77 is: 2,887,958.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,120,077.91 : 7,680,412.12 = 1,925,231.77 : x
  2. Step 2: Convert to fraction form
    5,120,077.91/7,680,412.12 = 1,925,231.77/x
  3. Step 3: Cross multiply
    5,120,077.91x = 7,680,412.12 × 1,925,231.77
  4. Step 4: Simplify right side
    5,120,077.91x = 14,786,573,420,117.05
  5. Step 5: Solve for x
    x = 14,786,573,420,117.05/5,120,077.91
  6. Step 6: Final answer
    x = 2,887,958.68

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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.