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Finding the Fourth Proportional to 674,763.80, 931,148.84 and 368,837.68

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Solution

The fourth proportional to 674,763.80, 931,148.84 and 368,837.68 is: 508,982.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,763.80 : 931,148.84 = 368,837.68 : x
  2. Step 2: Convert to fraction form
    674,763.80/931,148.84 = 368,837.68/x
  3. Step 3: Cross multiply
    674,763.80x = 931,148.84 × 368,837.68
  4. Step 4: Simplify right side
    674,763.80x = 343,442,777,880.29
  5. Step 5: Solve for x
    x = 343,442,777,880.29/674,763.80
  6. Step 6: Final answer
    x = 508,982.22

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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.