Home / 387,078,418.40-580,617,627.60-328,627,781.60

Finding the Fourth Proportional to 387,078,418.40, 580,617,627.60 and 328,627,781.60

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Solution

The fourth proportional to 387,078,418.40, 580,617,627.60 and 328,627,781.60 is: 492,941,672.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,078,418.40 : 580,617,627.60 = 328,627,781.60 : x
  2. Step 2: Convert to fraction form
    387,078,418.40/580,617,627.60 = 328,627,781.60/x
  3. Step 3: Cross multiply
    387,078,418.40x = 580,617,627.60 × 328,627,781.60
  4. Step 4: Simplify right side
    387,078,418.40x = 190,807,082,916,042,944
  5. Step 5: Solve for x
    x = 190,807,082,916,042,944/387,078,418.40
  6. Step 6: Final answer
    x = 492,941,672.40

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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.