Home / 488,107,630.78-673,601,685.60-287,178,531.28

Finding the Fourth Proportional to 488,107,630.78, 673,601,685.60 and 287,178,531.28

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Solution

The fourth proportional to 488,107,630.78, 673,601,685.60 and 287,178,531.28 is: 396,314,112.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,107,630.78 : 673,601,685.60 = 287,178,531.28 : x
  2. Step 2: Convert to fraction form
    488,107,630.78/673,601,685.60 = 287,178,531.28/x
  3. Step 3: Cross multiply
    488,107,630.78x = 673,601,685.60 × 287,178,531.28
  4. Step 4: Simplify right side
    488,107,630.78x = 193,443,942,738,340,320
  5. Step 5: Solve for x
    x = 193,443,942,738,340,320/488,107,630.78
  6. Step 6: Final answer
    x = 396,314,112.99

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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.