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Finding the Fourth Proportional to 674,436.74, 930,711.88 and 368,506.49

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Solution

The fourth proportional to 674,436.74, 930,711.88 and 368,506.49 is: 508,533.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,436.74 : 930,711.88 = 368,506.49 : x
  2. Step 2: Convert to fraction form
    674,436.74/930,711.88 = 368,506.49/x
  3. Step 3: Cross multiply
    674,436.74x = 930,711.88 × 368,506.49
  4. Step 4: Simplify right side
    674,436.74x = 342,973,368,100.10
  5. Step 5: Solve for x
    x = 342,973,368,100.10/674,436.74
  6. Step 6: Final answer
    x = 508,533.04

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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.