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Finding the Fourth Proportional to 615,936, 924,272.64 and 265,728

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Solution

The fourth proportional to 615,936, 924,272.64 and 265,728 is: 398,751.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,936 : 924,272.64 = 265,728 : x
  2. Step 2: Convert to fraction form
    615,936/924,272.64 = 265,728/x
  3. Step 3: Cross multiply
    615,936x = 924,272.64 × 265,728
  4. Step 4: Simplify right side
    615,936x = 245,605,120,081.92
  5. Step 5: Solve for x
    x = 245,605,120,081.92/615,936
  6. Step 6: Final answer
    x = 398,751.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.