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Finding the Fourth Proportional to 615,902.60, 863,507.80 and 615,902.60

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Solution

The fourth proportional to 615,902.60, 863,507.80 and 615,902.60 is: 863,507.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,902.60 : 863,507.80 = 615,902.60 : x
  2. Step 2: Convert to fraction form
    615,902.60/863,507.80 = 615,902.60/x
  3. Step 3: Cross multiply
    615,902.60x = 863,507.80 × 615,902.60
  4. Step 4: Simplify right side
    615,902.60x = 531,836,699,140.28
  5. Step 5: Solve for x
    x = 531,836,699,140.28/615,902.60
  6. Step 6: Final answer
    x = 863,507.80

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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.