Home / 1,391,792,881.20-2,087,359,697.16-518,804,067.12

Finding the Fourth Proportional to 1,391,792,881.20, 2,087,359,697.16 and 518,804,067.12

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Solution

The fourth proportional to 1,391,792,881.20, 2,087,359,697.16 and 518,804,067.12 is: 778,083,229.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,391,792,881.20 : 2,087,359,697.16 = 518,804,067.12 : x
  2. Step 2: Convert to fraction form
    1,391,792,881.20/2,087,359,697.16 = 518,804,067.12/x
  3. Step 3: Cross multiply
    1,391,792,881.20x = 2,087,359,697.16 × 518,804,067.12
  4. Step 4: Simplify right side
    1,391,792,881.20x = 1,082,930,700,428,979,584
  5. Step 5: Solve for x
    x = 1,082,930,700,428,979,584/1,391,792,881.20
  6. Step 6: Final answer
    x = 778,083,229.95

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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.