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Finding the Fourth Proportional to 674,253.21, 930,497.75 and 387,773.56

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Solution

The fourth proportional to 674,253.21, 930,497.75 and 387,773.56 is: 535,143.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,253.21 : 930,497.75 = 387,773.56 : x
  2. Step 2: Convert to fraction form
    674,253.21/930,497.75 = 387,773.56/x
  3. Step 3: Cross multiply
    674,253.21x = 930,497.75 × 387,773.56
  4. Step 4: Simplify right side
    674,253.21x = 360,822,425,089.49
  5. Step 5: Solve for x
    x = 360,822,425,089.49/674,253.21
  6. Step 6: Final answer
    x = 535,143.80

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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.