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Finding the Fourth Proportional to 617,963.50, 927,448.08 and 318,529.71

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Solution

The fourth proportional to 617,963.50, 927,448.08 and 318,529.71 is: 478,053.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,963.50 : 927,448.08 = 318,529.71 : x
  2. Step 2: Convert to fraction form
    617,963.50/927,448.08 = 318,529.71/x
  3. Step 3: Cross multiply
    617,963.50x = 927,448.08 × 318,529.71
  4. Step 4: Simplify right side
    617,963.50x = 295,419,767,962.46
  5. Step 5: Solve for x
    x = 295,419,767,962.46/617,963.50
  6. Step 6: Final answer
    x = 478,053.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.