Home / 691,101,009.70-1,036,651,514.55-645,751,377.70

Finding the Fourth Proportional to 691,101,009.70, 1,036,651,514.55 and 645,751,377.70

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Solution

The fourth proportional to 691,101,009.70, 1,036,651,514.55 and 645,751,377.70 is: 968,627,066.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,101,009.70 : 1,036,651,514.55 = 645,751,377.70 : x
  2. Step 2: Convert to fraction form
    691,101,009.70/1,036,651,514.55 = 645,751,377.70/x
  3. Step 3: Cross multiply
    691,101,009.70x = 1,036,651,514.55 × 645,751,377.70
  4. Step 4: Simplify right side
    691,101,009.70x = 669,419,143,715,454,080
  5. Step 5: Solve for x
    x = 669,419,143,715,454,080/691,101,009.70
  6. Step 6: Final answer
    x = 968,627,066.55

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Double scale
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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.