Home / 691,827,422.20-954,743,257.74-378,574,839.16

Finding the Fourth Proportional to 691,827,422.20, 954,743,257.74 and 378,574,839.16

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Solution

The fourth proportional to 691,827,422.20, 954,743,257.74 and 378,574,839.16 is: 522,444,996.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,827,422.20 : 954,743,257.74 = 378,574,839.16 : x
  2. Step 2: Convert to fraction form
    691,827,422.20/954,743,257.74 = 378,574,839.16/x
  3. Step 3: Cross multiply
    691,827,422.20x = 954,743,257.74 × 378,574,839.16
  4. Step 4: Simplify right side
    691,827,422.20x = 361,441,775,238,014,976
  5. Step 5: Solve for x
    x = 361,441,775,238,014,976/691,827,422.20
  6. Step 6: Final answer
    x = 522,444,996.60

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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.