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Finding the Fourth Proportional to 674,551.10, 930,892.74 and 368,640.43

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Solution

The fourth proportional to 674,551.10, 930,892.74 and 368,640.43 is: 508,730.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,551.10 : 930,892.74 = 368,640.43 : x
  2. Step 2: Convert to fraction form
    674,551.10/930,892.74 = 368,640.43/x
  3. Step 3: Cross multiply
    674,551.10x = 930,892.74 × 368,640.43
  4. Step 4: Simplify right side
    674,551.10x = 343,164,699,957.48
  5. Step 5: Solve for x
    x = 343,164,699,957.48/674,551.10
  6. Step 6: Final answer
    x = 508,730.47

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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.