Home / 639,156,349.78-959,010,721.74-343,706,145.27

Finding the Fourth Proportional to 639,156,349.78, 959,010,721.74 and 343,706,145.27

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Solution

The fourth proportional to 639,156,349.78, 959,010,721.74 and 343,706,145.27 is: 515,707,742.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,156,349.78 : 959,010,721.74 = 343,706,145.27 : x
  2. Step 2: Convert to fraction form
    639,156,349.78/959,010,721.74 = 343,706,145.27/x
  3. Step 3: Cross multiply
    639,156,349.78x = 959,010,721.74 × 343,706,145.27
  4. Step 4: Simplify right side
    639,156,349.78x = 329,617,878,441,856,000
  5. Step 5: Solve for x
    x = 329,617,878,441,856,000/639,156,349.78
  6. Step 6: Final answer
    x = 515,707,742.80

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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.