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Finding the Fourth Proportional to 625,347,987.39, 938,028,716.64 and 188,652,454.92

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Solution

The fourth proportional to 625,347,987.39, 938,028,716.64 and 188,652,454.92 is: 282,980,714.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,347,987.39 : 938,028,716.64 = 188,652,454.92 : x
  2. Step 2: Convert to fraction form
    625,347,987.39/938,028,716.64 = 188,652,454.92/x
  3. Step 3: Cross multiply
    625,347,987.39x = 938,028,716.64 × 188,652,454.92
  4. Step 4: Simplify right side
    625,347,987.39x = 176,961,420,179,593,024
  5. Step 5: Solve for x
    x = 176,961,420,179,593,024/625,347,987.39
  6. Step 6: Final answer
    x = 282,980,714.34

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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.