Home / 439,121,445.80-658,617,377.67-128,145,564.50

Finding the Fourth Proportional to 439,121,445.80, 658,617,377.67 and 128,145,564.50

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Solution

The fourth proportional to 439,121,445.80, 658,617,377.67 and 128,145,564.50 is: 192,199,439.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,121,445.80 : 658,617,377.67 = 128,145,564.50 : x
  2. Step 2: Convert to fraction form
    439,121,445.80/658,617,377.67 = 128,145,564.50/x
  3. Step 3: Cross multiply
    439,121,445.80x = 658,617,377.67 × 128,145,564.50
  4. Step 4: Simplify right side
    439,121,445.80x = 84,398,895,647,738,752
  5. Step 5: Solve for x
    x = 84,398,895,647,738,752/439,121,445.80
  6. Step 6: Final answer
    x = 192,199,439.26

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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.