Home / 613,780,835.80-921,253,314.16-379,904,090.96

Finding the Fourth Proportional to 613,780,835.80, 921,253,314.16 and 379,904,090.96

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Solution

The fourth proportional to 613,780,835.80, 921,253,314.16 and 379,904,090.96 is: 570,216,406.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,780,835.80 : 921,253,314.16 = 379,904,090.96 : x
  2. Step 2: Convert to fraction form
    613,780,835.80/921,253,314.16 = 379,904,090.96/x
  3. Step 3: Cross multiply
    613,780,835.80x = 921,253,314.16 × 379,904,090.96
  4. Step 4: Simplify right side
    613,780,835.80x = 349,987,902,859,842,048
  5. Step 5: Solve for x
    x = 349,987,902,859,842,048/613,780,835.80
  6. Step 6: Final answer
    x = 570,216,406.97

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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.