Home / 639,156,340.52-959,010,707.86-343,706,136.02

Finding the Fourth Proportional to 639,156,340.52, 959,010,707.86 and 343,706,136.02

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Solution

The fourth proportional to 639,156,340.52, 959,010,707.86 and 343,706,136.02 is: 515,707,728.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,156,340.52 : 959,010,707.86 = 343,706,136.02 : x
  2. Step 2: Convert to fraction form
    639,156,340.52/959,010,707.86 = 343,706,136.02/x
  3. Step 3: Cross multiply
    639,156,340.52x = 959,010,707.86 × 343,706,136.02
  4. Step 4: Simplify right side
    639,156,340.52x = 329,617,864,798,667,072
  5. Step 5: Solve for x
    x = 329,617,864,798,667,072/639,156,340.52
  6. Step 6: Final answer
    x = 515,707,728.93

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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.