Home / 691,101,013.20-1,036,651,519.80-645,751,381.20

Finding the Fourth Proportional to 691,101,013.20, 1,036,651,519.80 and 645,751,381.20

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Solution

The fourth proportional to 691,101,013.20, 1,036,651,519.80 and 645,751,381.20 is: 968,627,071.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,101,013.20 : 1,036,651,519.80 = 645,751,381.20 : x
  2. Step 2: Convert to fraction form
    691,101,013.20/1,036,651,519.80 = 645,751,381.20/x
  3. Step 3: Cross multiply
    691,101,013.20x = 1,036,651,519.80 × 645,751,381.20
  4. Step 4: Simplify right side
    691,101,013.20x = 669,419,150,733,929,216
  5. Step 5: Solve for x
    x = 669,419,150,733,929,216/691,101,013.20
  6. Step 6: Final answer
    x = 968,627,071.80

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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.