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Finding the Fourth Proportional to 902,799, 1,245,862.80 and 500,391

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Solution

The fourth proportional to 902,799, 1,245,862.80 and 500,391 is: 690,539.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    902,799 : 1,245,862.80 = 500,391 : x
  2. Step 2: Convert to fraction form
    902,799/1,245,862.80 = 500,391/x
  3. Step 3: Cross multiply
    902,799x = 1,245,862.80 × 500,391
  4. Step 4: Simplify right side
    902,799x = 623,418,532,354.80
  5. Step 5: Solve for x
    x = 623,418,532,354.80/902,799
  6. Step 6: Final answer
    x = 690,539.68

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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.