Home / 511,967,721.38-706,255,170.42-310,971,109.10

Finding the Fourth Proportional to 511,967,721.38, 706,255,170.42 and 310,971,109.10

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Solution

The fourth proportional to 511,967,721.38, 706,255,170.42 and 310,971,109.10 is: 428,982,032.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,967,721.38 : 706,255,170.42 = 310,971,109.10 : x
  2. Step 2: Convert to fraction form
    511,967,721.38/706,255,170.42 = 310,971,109.10/x
  3. Step 3: Cross multiply
    511,967,721.38x = 706,255,170.42 × 310,971,109.10
  4. Step 4: Simplify right side
    511,967,721.38x = 219,624,953,653,116,928
  5. Step 5: Solve for x
    x = 219,624,953,653,116,928/511,967,721.38
  6. Step 6: Final answer
    x = 428,982,032.42

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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.