Home / 772,522,009.38-1,066,087,964.07-420,105,658.23

Finding the Fourth Proportional to 772,522,009.38, 1,066,087,964.07 and 420,105,658.23

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Solution

The fourth proportional to 772,522,009.38, 1,066,087,964.07 and 420,105,658.23 is: 579,749,936.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,522,009.38 : 1,066,087,964.07 = 420,105,658.23 : x
  2. Step 2: Convert to fraction form
    772,522,009.38/1,066,087,964.07 = 420,105,658.23/x
  3. Step 3: Cross multiply
    772,522,009.38x = 1,066,087,964.07 × 420,105,658.23
  4. Step 4: Simplify right side
    772,522,009.38x = 447,869,585,876,707,968
  5. Step 5: Solve for x
    x = 447,869,585,876,707,968/772,522,009.38
  6. Step 6: Final answer
    x = 579,749,936.49

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Double scale
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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.