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Finding the Fourth Proportional to 674,940, 931,436.64 and 373,153.44

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Solution

The fourth proportional to 674,940, 931,436.64 and 373,153.44 is: 514,962.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,940 : 931,436.64 = 373,153.44 : x
  2. Step 2: Convert to fraction form
    674,940/931,436.64 = 373,153.44/x
  3. Step 3: Cross multiply
    674,940x = 931,436.64 × 373,153.44
  4. Step 4: Simplify right side
    674,940x = 347,568,786,358.04
  5. Step 5: Solve for x
    x = 347,568,786,358.04/674,940
  6. Step 6: Final answer
    x = 514,962.49

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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.