Home / 645,212,368,398.42-890,369,727,936.52-356,174,419,769.48

Finding the Fourth Proportional to 645,212,368,398.42, 890,369,727,936.52 and 356,174,419,769.48

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Solution

The fourth proportional to 645,212,368,398.42, 890,369,727,936.52 and 356,174,419,769.48 is: 491,507,814,729.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,212,368,398.42 : 890,369,727,936.52 = 356,174,419,769.48 : x
  2. Step 2: Convert to fraction form
    645,212,368,398.42/890,369,727,936.52 = 356,174,419,769.48/x
  3. Step 3: Cross multiply
    645,212,368,398.42x = 890,369,727,936.52 × 356,174,419,769.48
  4. Step 4: Simplify right side
    645,212,368,398.42x = 317,126,921,228,099,782,705,152
  5. Step 5: Solve for x
    x = 317,126,921,228,099,782,705,152/645,212,368,398.42
  6. Step 6: Final answer
    x = 491,507,814,729.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.