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Finding the Fourth Proportional to 654,290.34, 902,968.20 and 399,689.52

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Solution

The fourth proportional to 654,290.34, 902,968.20 and 399,689.52 is: 551,600.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,290.34 : 902,968.20 = 399,689.52 : x
  2. Step 2: Convert to fraction form
    654,290.34/902,968.20 = 399,689.52/x
  3. Step 3: Cross multiply
    654,290.34x = 902,968.20 × 399,689.52
  4. Step 4: Simplify right side
    654,290.34x = 360,906,926,433.26
  5. Step 5: Solve for x
    x = 360,906,926,433.26/654,290.34
  6. Step 6: Final answer
    x = 551,600.57

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.