Home / 991,881,353.12-1,368,488,115.07-562,647,900.38

Finding the Fourth Proportional to 991,881,353.12, 1,368,488,115.07 and 562,647,900.38

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Solution

The fourth proportional to 991,881,353.12, 1,368,488,115.07 and 562,647,900.38 is: 776,279,302.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,881,353.12 : 1,368,488,115.07 = 562,647,900.38 : x
  2. Step 2: Convert to fraction form
    991,881,353.12/1,368,488,115.07 = 562,647,900.38/x
  3. Step 3: Cross multiply
    991,881,353.12x = 1,368,488,115.07 × 562,647,900.38
  4. Step 4: Simplify right side
    991,881,353.12x = 769,976,964,630,870,400
  5. Step 5: Solve for x
    x = 769,976,964,630,870,400/991,881,353.12
  6. Step 6: Final answer
    x = 776,279,302.17

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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.