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Finding the Fourth Proportional to 498,422.61, 687,838.77 and 283,593.60

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Solution

The fourth proportional to 498,422.61, 687,838.77 and 283,593.60 is: 391,368.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,422.61 : 687,838.77 = 283,593.60 : x
  2. Step 2: Convert to fraction form
    498,422.61/687,838.77 = 283,593.60/x
  3. Step 3: Cross multiply
    498,422.61x = 687,838.77 × 283,593.60
  4. Step 4: Simplify right side
    498,422.61x = 195,066,673,003.87
  5. Step 5: Solve for x
    x = 195,066,673,003.87/498,422.61
  6. Step 6: Final answer
    x = 391,368.03

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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.