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Finding the Fourth Proportional to 1,738,689.31, 2,399,389.63 and 974,743.03

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Solution

The fourth proportional to 1,738,689.31, 2,399,389.63 and 974,743.03 is: 1,345,144.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,738,689.31 : 2,399,389.63 = 974,743.03 : x
  2. Step 2: Convert to fraction form
    1,738,689.31/2,399,389.63 = 974,743.03/x
  3. Step 3: Cross multiply
    1,738,689.31x = 2,399,389.63 × 974,743.03
  4. Step 4: Simplify right side
    1,738,689.31x = 2,338,788,318,096.78
  5. Step 5: Solve for x
    x = 2,338,788,318,096.78/1,738,689.31
  6. Step 6: Final answer
    x = 1,345,144.47

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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.