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Finding the Fourth Proportional to 679,264, 1,017,495.60 and 397,928.32

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Solution

The fourth proportional to 679,264, 1,017,495.60 and 397,928.32 is: 596,072.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,264 : 1,017,495.60 = 397,928.32 : x
  2. Step 2: Convert to fraction form
    679,264/1,017,495.60 = 397,928.32/x
  3. Step 3: Cross multiply
    679,264x = 1,017,495.60 × 397,928.32
  4. Step 4: Simplify right side
    679,264x = 404,890,314,715.39
  5. Step 5: Solve for x
    x = 404,890,314,715.39/679,264
  6. Step 6: Final answer
    x = 596,072.09

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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.