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Finding the Fourth Proportional to 674,549.10, 930,889.98 and 368,638.43

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Solution

The fourth proportional to 674,549.10, 930,889.98 and 368,638.43 is: 508,727.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,549.10 : 930,889.98 = 368,638.43 : x
  2. Step 2: Convert to fraction form
    674,549.10/930,889.98 = 368,638.43/x
  3. Step 3: Cross multiply
    674,549.10x = 930,889.98 × 368,638.43
  4. Step 4: Simplify right side
    674,549.10x = 343,161,816,075.48
  5. Step 5: Solve for x
    x = 343,161,816,075.48/674,549.10
  6. Step 6: Final answer
    x = 508,727.71

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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.