Home / 639,928,262,808.50-959,220,458,809.10-215,309,111,281.24

Finding the Fourth Proportional to 639,928,262,808.50, 959,220,458,809.10 and 215,309,111,281.24

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Solution

The fourth proportional to 639,928,262,808.50, 959,220,458,809.10 and 215,309,111,281.24 is: 322,737,588,745.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,928,262,808.50 : 959,220,458,809.10 = 215,309,111,281.24 : x
  2. Step 2: Convert to fraction form
    639,928,262,808.50/959,220,458,809.10 = 215,309,111,281.24/x
  3. Step 3: Cross multiply
    639,928,262,808.50x = 959,220,458,809.10 × 215,309,111,281.24
  4. Step 4: Simplify right side
    639,928,262,808.50x = 206,528,904,508,970,570,350,592
  5. Step 5: Solve for x
    x = 206,528,904,508,970,570,350,592/639,928,262,808.50
  6. Step 6: Final answer
    x = 322,737,588,745.59

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Double scale
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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.