Home / 639,759,349.80-959,639,024.70-542,904,227.55

Finding the Fourth Proportional to 639,759,349.80, 959,639,024.70 and 542,904,227.55

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Solution

The fourth proportional to 639,759,349.80, 959,639,024.70 and 542,904,227.55 is: 814,356,341.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,759,349.80 : 959,639,024.70 = 542,904,227.55 : x
  2. Step 2: Convert to fraction form
    639,759,349.80/959,639,024.70 = 542,904,227.55/x
  3. Step 3: Cross multiply
    639,759,349.80x = 959,639,024.70 × 542,904,227.55
  4. Step 4: Simplify right side
    639,759,349.80x = 520,992,083,431,588,864
  5. Step 5: Solve for x
    x = 520,992,083,431,588,864/639,759,349.80
  6. Step 6: Final answer
    x = 814,356,341.33

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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.