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Finding the Fourth Proportional to 674,685.44, 931,029.36 and 372,860

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Solution

The fourth proportional to 674,685.44, 931,029.36 and 372,860 is: 514,526.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,685.44 : 931,029.36 = 372,860 : x
  2. Step 2: Convert to fraction form
    674,685.44/931,029.36 = 372,860/x
  3. Step 3: Cross multiply
    674,685.44x = 931,029.36 × 372,860
  4. Step 4: Simplify right side
    674,685.44x = 347,143,607,169.60
  5. Step 5: Solve for x
    x = 347,143,607,169.60/674,685.44
  6. Step 6: Final answer
    x = 514,526.60

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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.