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Finding the Fourth Proportional to 615,913.60, 863,523.20 and 615,913.60

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Solution

The fourth proportional to 615,913.60, 863,523.20 and 615,913.60 is: 863,523.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,913.60 : 863,523.20 = 615,913.60 : x
  2. Step 2: Convert to fraction form
    615,913.60/863,523.20 = 615,913.60/x
  3. Step 3: Cross multiply
    615,913.60x = 863,523.20 × 615,913.60
  4. Step 4: Simplify right side
    615,913.60x = 531,855,682,795.52
  5. Step 5: Solve for x
    x = 531,855,682,795.52/615,913.60
  6. Step 6: Final answer
    x = 863,523.20

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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.