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Finding the Fourth Proportional to 674,252.66, 930,495.57 and 387,772.58

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Solution

The fourth proportional to 674,252.66, 930,495.57 and 387,772.58 is: 535,141.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,252.66 : 930,495.57 = 387,772.58 : x
  2. Step 2: Convert to fraction form
    674,252.66/930,495.57 = 387,772.58/x
  3. Step 3: Cross multiply
    674,252.66x = 930,495.57 × 387,772.58
  4. Step 4: Simplify right side
    674,252.66x = 360,820,667,857.47
  5. Step 5: Solve for x
    x = 360,820,667,857.47/674,252.66
  6. Step 6: Final answer
    x = 535,141.63

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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.