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Finding the Fourth Proportional to 615,912, 849,961.12 and 333,288

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Solution

The fourth proportional to 615,912, 849,961.12 and 333,288 is: 459,938.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,912 : 849,961.12 = 333,288 : x
  2. Step 2: Convert to fraction form
    615,912/849,961.12 = 333,288/x
  3. Step 3: Cross multiply
    615,912x = 849,961.12 × 333,288
  4. Step 4: Simplify right side
    615,912x = 283,281,841,762.56
  5. Step 5: Solve for x
    x = 283,281,841,762.56/615,912
  6. Step 6: Final answer
    x = 459,938.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.