Home / 523,328,948.43-722,198,792.12-288,388,016.70

Finding the Fourth Proportional to 523,328,948.43, 722,198,792.12 and 288,388,016.70

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Solution

The fourth proportional to 523,328,948.43, 722,198,792.12 and 288,388,016.70 is: 397,978,132.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    523,328,948.43 : 722,198,792.12 = 288,388,016.70 : x
  2. Step 2: Convert to fraction form
    523,328,948.43/722,198,792.12 = 288,388,016.70/x
  3. Step 3: Cross multiply
    523,328,948.43x = 722,198,792.12 × 288,388,016.70
  4. Step 4: Simplify right side
    523,328,948.43x = 208,273,477,321,180,448
  5. Step 5: Solve for x
    x = 208,273,477,321,180,448/523,328,948.43
  6. Step 6: Final answer
    x = 397,978,132.01

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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.