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Finding the Fourth Proportional to 504,187.49, 695,720.05 and 307,855.20

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Solution

The fourth proportional to 504,187.49, 695,720.05 and 307,855.20 is: 424,804.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    504,187.49 : 695,720.05 = 307,855.20 : x
  2. Step 2: Convert to fraction form
    504,187.49/695,720.05 = 307,855.20/x
  3. Step 3: Cross multiply
    504,187.49x = 695,720.05 × 307,855.20
  4. Step 4: Simplify right side
    504,187.49x = 214,181,034,794.33
  5. Step 5: Solve for x
    x = 214,181,034,794.33/504,187.49
  6. Step 6: Final answer
    x = 424,804.34

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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.