Home / 648,084,540-894,365,063.28-354,722,809.44

Finding the Fourth Proportional to 648,084,540, 894,365,063.28 and 354,722,809.44

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Solution

The fourth proportional to 648,084,540, 894,365,063.28 and 354,722,809.44 is: 489,522,073.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,084,540 : 894,365,063.28 = 354,722,809.44 : x
  2. Step 2: Convert to fraction form
    648,084,540/894,365,063.28 = 354,722,809.44/x
  3. Step 3: Cross multiply
    648,084,540x = 894,365,063.28 × 354,722,809.44
  4. Step 4: Simplify right side
    648,084,540x = 317,251,687,911,664,960
  5. Step 5: Solve for x
    x = 317,251,687,911,664,960/648,084,540
  6. Step 6: Final answer
    x = 489,522,073.64

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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.