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Finding the Fourth Proportional to 615,913.20, 923,092.20 and 299,689.20

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Solution

The fourth proportional to 615,913.20, 923,092.20 and 299,689.20 is: 449,155.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,913.20 : 923,092.20 = 299,689.20 : x
  2. Step 2: Convert to fraction form
    615,913.20/923,092.20 = 299,689.20/x
  3. Step 3: Cross multiply
    615,913.20x = 923,092.20 × 299,689.20
  4. Step 4: Simplify right side
    615,913.20x = 276,640,762,944.24
  5. Step 5: Solve for x
    x = 276,640,762,944.24/615,913.20
  6. Step 6: Final answer
    x = 449,155.44

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1.5x scale

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.