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Finding the Fourth Proportional to 605,425.08, 835,320.32 and 421,457.48

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Solution

The fourth proportional to 605,425.08, 835,320.32 and 421,457.48 is: 581,495.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,425.08 : 835,320.32 = 421,457.48 : x
  2. Step 2: Convert to fraction form
    605,425.08/835,320.32 = 421,457.48/x
  3. Step 3: Cross multiply
    605,425.08x = 835,320.32 × 421,457.48
  4. Step 4: Simplify right side
    605,425.08x = 352,051,997,059.99
  5. Step 5: Solve for x
    x = 352,051,997,059.99/605,425.08
  6. Step 6: Final answer
    x = 581,495.56

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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.