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Finding the Fourth Proportional to 585,912.89, 808,620.10 and 356,486.47

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Solution

The fourth proportional to 585,912.89, 808,620.10 and 356,486.47 is: 491,988.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    585,912.89 : 808,620.10 = 356,486.47 : x
  2. Step 2: Convert to fraction form
    585,912.89/808,620.10 = 356,486.47/x
  3. Step 3: Cross multiply
    585,912.89x = 808,620.10 × 356,486.47
  4. Step 4: Simplify right side
    585,912.89x = 288,262,122,107.28
  5. Step 5: Solve for x
    x = 288,262,122,107.28/585,912.89
  6. Step 6: Final answer
    x = 491,988.02

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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.