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Finding the Fourth Proportional to 617,930.40, 866,968.80 and 617,930.40

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Solution

The fourth proportional to 617,930.40, 866,968.80 and 617,930.40 is: 866,968.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,930.40 : 866,968.80 = 617,930.40 : x
  2. Step 2: Convert to fraction form
    617,930.40/866,968.80 = 617,930.40/x
  3. Step 3: Cross multiply
    617,930.40x = 866,968.80 × 617,930.40
  4. Step 4: Simplify right side
    617,930.40x = 535,726,377,371.52
  5. Step 5: Solve for x
    x = 535,726,377,371.52/617,930.40
  6. Step 6: Final answer
    x = 866,968.80

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.