Home / 613,780,631.88-921,253,008.54-379,903,887.26

Finding the Fourth Proportional to 613,780,631.88, 921,253,008.54 and 379,903,887.26

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Solution

The fourth proportional to 613,780,631.88, 921,253,008.54 and 379,903,887.26 is: 570,216,101.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,780,631.88 : 921,253,008.54 = 379,903,887.26 : x
  2. Step 2: Convert to fraction form
    613,780,631.88/921,253,008.54 = 379,903,887.26/x
  3. Step 3: Cross multiply
    613,780,631.88x = 921,253,008.54 × 379,903,887.26
  4. Step 4: Simplify right side
    613,780,631.88x = 349,987,599,094,315,968
  5. Step 5: Solve for x
    x = 349,987,599,094,315,968/613,780,631.88
  6. Step 6: Final answer
    x = 570,216,101.51

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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.