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Finding the Fourth Proportional to 519,620.22, 779,480.01 and 145,642.14

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Solution

The fourth proportional to 519,620.22, 779,480.01 and 145,642.14 is: 218,477.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,620.22 : 779,480.01 = 145,642.14 : x
  2. Step 2: Convert to fraction form
    519,620.22/779,480.01 = 145,642.14/x
  3. Step 3: Cross multiply
    519,620.22x = 779,480.01 × 145,642.14
  4. Step 4: Simplify right side
    519,620.22x = 113,525,136,743.62
  5. Step 5: Solve for x
    x = 113,525,136,743.62/519,620.22
  6. Step 6: Final answer
    x = 218,477.13

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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.