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Finding the Fourth Proportional to 613,637.80, 919,201.87 and 500,189.91

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Solution

The fourth proportional to 613,637.80, 919,201.87 and 500,189.91 is: 749,262.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,637.80 : 919,201.87 = 500,189.91 : x
  2. Step 2: Convert to fraction form
    613,637.80/919,201.87 = 500,189.91/x
  3. Step 3: Cross multiply
    613,637.80x = 919,201.87 × 500,189.91
  4. Step 4: Simplify right side
    613,637.80x = 459,775,500,390.62
  5. Step 5: Solve for x
    x = 459,775,500,390.62/613,637.80
  6. Step 6: Final answer
    x = 749,262.02

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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.