Home / 426,505,832.07-639,758,748.09-103,389,704.07

Finding the Fourth Proportional to 426,505,832.07, 639,758,748.09 and 103,389,704.07

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Solution

The fourth proportional to 426,505,832.07, 639,758,748.09 and 103,389,704.07 is: 155,084,556.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,505,832.07 : 639,758,748.09 = 103,389,704.07 : x
  2. Step 2: Convert to fraction form
    426,505,832.07/639,758,748.09 = 103,389,704.07/x
  3. Step 3: Cross multiply
    426,505,832.07x = 639,758,748.09 × 103,389,704.07
  4. Step 4: Simplify right side
    426,505,832.07x = 66,144,467,641,218,776
  5. Step 5: Solve for x
    x = 66,144,467,641,218,776/426,505,832.07
  6. Step 6: Final answer
    x = 155,084,556.10

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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.