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Finding the Fourth Proportional to 674,417.40, 930,694.55 and 368,495.96

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Solution

The fourth proportional to 674,417.40, 930,694.55 and 368,495.96 is: 508,523.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,417.40 : 930,694.55 = 368,495.96 : x
  2. Step 2: Convert to fraction form
    674,417.40/930,694.55 = 368,495.96/x
  3. Step 3: Cross multiply
    674,417.40x = 930,694.55 × 368,495.96
  4. Step 4: Simplify right side
    674,417.40x = 342,957,175,173.07
  5. Step 5: Solve for x
    x = 342,957,175,173.07/674,417.40
  6. Step 6: Final answer
    x = 508,523.62

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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.