Home / 485,121,472.42-669,535,908.33-308,853,160.42

Finding the Fourth Proportional to 485,121,472.42, 669,535,908.33 and 308,853,160.42

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Solution

The fourth proportional to 485,121,472.42, 669,535,908.33 and 308,853,160.42 is: 426,260,829.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,121,472.42 : 669,535,908.33 = 308,853,160.42 : x
  2. Step 2: Convert to fraction form
    485,121,472.42/669,535,908.33 = 308,853,160.42/x
  3. Step 3: Cross multiply
    485,121,472.42x = 669,535,908.33 × 308,853,160.42
  4. Step 4: Simplify right side
    485,121,472.42x = 206,788,281,302,395,936
  5. Step 5: Solve for x
    x = 206,788,281,302,395,936/485,121,472.42
  6. Step 6: Final answer
    x = 426,260,829.62

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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.