Home / 991,881,357.62-1,368,488,121.27-562,647,904.88

Finding the Fourth Proportional to 991,881,357.62, 1,368,488,121.27 and 562,647,904.88

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Solution

The fourth proportional to 991,881,357.62, 1,368,488,121.27 and 562,647,904.88 is: 776,279,308.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,881,357.62 : 1,368,488,121.27 = 562,647,904.88 : x
  2. Step 2: Convert to fraction form
    991,881,357.62/1,368,488,121.27 = 562,647,904.88/x
  3. Step 3: Cross multiply
    991,881,357.62x = 1,368,488,121.27 × 562,647,904.88
  4. Step 4: Simplify right side
    991,881,357.62x = 769,976,974,278,890,368
  5. Step 5: Solve for x
    x = 769,976,974,278,890,368/991,881,357.62
  6. Step 6: Final answer
    x = 776,279,308.37

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1.5x scale

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.