Home / 401,958,062,430.78-603,115,144,397.77-210,684,643,149.36

Finding the Fourth Proportional to 401,958,062,430.78, 603,115,144,397.77 and 210,684,643,149.36

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Solution

The fourth proportional to 401,958,062,430.78, 603,115,144,397.77 and 210,684,643,149.36 is: 316,120,289,283.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,958,062,430.78 : 603,115,144,397.77 = 210,684,643,149.36 : x
  2. Step 2: Convert to fraction form
    401,958,062,430.78/603,115,144,397.77 = 210,684,643,149.36/x
  3. Step 3: Cross multiply
    401,958,062,430.78x = 603,115,144,397.77 × 210,684,643,149.36
  4. Step 4: Simplify right side
    401,958,062,430.78x = 127,067,098,975,418,890,321,920
  5. Step 5: Solve for x
    x = 127,067,098,975,418,890,321,920/401,958,062,430.78
  6. Step 6: Final answer
    x = 316,120,289,283.41

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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.