Home / 486,132,878.89-729,200,439.31-280,217,095.37

Finding the Fourth Proportional to 486,132,878.89, 729,200,439.31 and 280,217,095.37

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Solution

The fourth proportional to 486,132,878.89, 729,200,439.31 and 280,217,095.37 is: 420,326,289.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,132,878.89 : 729,200,439.31 = 280,217,095.37 : x
  2. Step 2: Convert to fraction form
    486,132,878.89/729,200,439.31 = 280,217,095.37/x
  3. Step 3: Cross multiply
    486,132,878.89x = 729,200,439.31 × 280,217,095.37
  4. Step 4: Simplify right side
    486,132,878.89x = 204,334,429,045,976,160
  5. Step 5: Solve for x
    x = 204,334,429,045,976,160/486,132,878.89
  6. Step 6: Final answer
    x = 420,326,289.21

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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.