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Finding the Fourth Proportional to 613,646.91, 920,617.97 and 192,922.47

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Solution

The fourth proportional to 613,646.91, 920,617.97 and 192,922.47 is: 289,430.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,646.91 : 920,617.97 = 192,922.47 : x
  2. Step 2: Convert to fraction form
    613,646.91/920,617.97 = 192,922.47/x
  3. Step 3: Cross multiply
    613,646.91x = 920,617.97 × 192,922.47
  4. Step 4: Simplify right side
    613,646.91x = 177,607,891,734.17
  5. Step 5: Solve for x
    x = 177,607,891,734.17/613,646.91
  6. Step 6: Final answer
    x = 289,430.11

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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.