Home / 640,988,010.40-962,489,785.20-368,890,218.40

Finding the Fourth Proportional to 640,988,010.40, 962,489,785.20 and 368,890,218.40

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Solution

The fourth proportional to 640,988,010.40, 962,489,785.20 and 368,890,218.40 is: 553,915,301.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,988,010.40 : 962,489,785.20 = 368,890,218.40 : x
  2. Step 2: Convert to fraction form
    640,988,010.40/962,489,785.20 = 368,890,218.40/x
  3. Step 3: Cross multiply
    640,988,010.40x = 962,489,785.20 × 368,890,218.40
  4. Step 4: Simplify right side
    640,988,010.40x = 355,053,067,070,197,056
  5. Step 5: Solve for x
    x = 355,053,067,070,197,056/640,988,010.40
  6. Step 6: Final answer
    x = 553,915,301.55

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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.