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Finding the Fourth Proportional to 605,420.07, 835,313.43 and 421,452.47

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Solution

The fourth proportional to 605,420.07, 835,313.43 and 421,452.47 is: 581,488.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,420.07 : 835,313.43 = 421,452.47 : x
  2. Step 2: Convert to fraction form
    605,420.07/835,313.43 = 421,452.47/x
  3. Step 3: Cross multiply
    605,420.07x = 835,313.43 × 421,452.47
  4. Step 4: Simplify right side
    605,420.07x = 352,044,904,121.11
  5. Step 5: Solve for x
    x = 352,044,904,121.11/605,420.07
  6. Step 6: Final answer
    x = 581,488.66

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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.