Home / 485,121,474.92-669,535,911.78-308,853,162.92

Finding the Fourth Proportional to 485,121,474.92, 669,535,911.78 and 308,853,162.92

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Solution

The fourth proportional to 485,121,474.92, 669,535,911.78 and 308,853,162.92 is: 426,260,833.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,121,474.92 : 669,535,911.78 = 308,853,162.92 : x
  2. Step 2: Convert to fraction form
    485,121,474.92/669,535,911.78 = 308,853,162.92/x
  3. Step 3: Cross multiply
    485,121,474.92x = 669,535,911.78 × 308,853,162.92
  4. Step 4: Simplify right side
    485,121,474.92x = 206,788,284,041,779,104
  5. Step 5: Solve for x
    x = 206,788,284,041,779,104/485,121,474.92
  6. Step 6: Final answer
    x = 426,260,833.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.