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Finding the Fourth Proportional to 615,693.44, 923,832.32 and 426,444.80

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Solution

The fourth proportional to 615,693.44, 923,832.32 and 426,444.80 is: 639,869.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,693.44 : 923,832.32 = 426,444.80 : x
  2. Step 2: Convert to fraction form
    615,693.44/923,832.32 = 426,444.80/x
  3. Step 3: Cross multiply
    615,693.44x = 923,832.32 × 426,444.80
  4. Step 4: Simplify right side
    615,693.44x = 393,963,488,935.94
  5. Step 5: Solve for x
    x = 393,963,488,935.94/615,693.44
  6. Step 6: Final answer
    x = 639,869.56

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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.