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Finding the Fourth Proportional to 617,905.60, 866,312 and 617,905.60

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Solution

The fourth proportional to 617,905.60, 866,312 and 617,905.60 is: 866,312

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,905.60 : 866,312 = 617,905.60 : x
  2. Step 2: Convert to fraction form
    617,905.60/866,312 = 617,905.60/x
  3. Step 3: Cross multiply
    617,905.60x = 866,312 × 617,905.60
  4. Step 4: Simplify right side
    617,905.60x = 535,299,036,147.20
  5. Step 5: Solve for x
    x = 535,299,036,147.20/617,905.60
  6. Step 6: Final answer
    x = 866,312

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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.