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Finding the Fourth Proportional to 617,911.10, 866,319.70 and 617,911.10

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Solution

The fourth proportional to 617,911.10, 866,319.70 and 617,911.10 is: 866,319.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,911.10 : 866,319.70 = 617,911.10 : x
  2. Step 2: Convert to fraction form
    617,911.10/866,319.70 = 617,911.10/x
  3. Step 3: Cross multiply
    617,911.10x = 866,319.70 × 617,911.10
  4. Step 4: Simplify right side
    617,911.10x = 535,308,558,778.67
  5. Step 5: Solve for x
    x = 535,308,558,778.67/617,911.10
  6. Step 6: Final answer
    x = 866,319.70

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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.