Home / 827,096,069.70-1,240,644,104.55-438,718,986.90

Finding the Fourth Proportional to 827,096,069.70, 1,240,644,104.55 and 438,718,986.90

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Solution

The fourth proportional to 827,096,069.70, 1,240,644,104.55 and 438,718,986.90 is: 658,078,480.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    827,096,069.70 : 1,240,644,104.55 = 438,718,986.90 : x
  2. Step 2: Convert to fraction form
    827,096,069.70/1,240,644,104.55 = 438,718,986.90/x
  3. Step 3: Cross multiply
    827,096,069.70x = 1,240,644,104.55 × 438,718,986.90
  4. Step 4: Simplify right side
    827,096,069.70x = 544,294,124,651,633,600
  5. Step 5: Solve for x
    x = 544,294,124,651,633,600/827,096,069.70
  6. Step 6: Final answer
    x = 658,078,480.35

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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.