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Finding the Fourth Proportional to 615,533.76, 923,592.24 and 426,285.36

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Solution

The fourth proportional to 615,533.76, 923,592.24 and 426,285.36 is: 639,629.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,533.76 : 923,592.24 = 426,285.36 : x
  2. Step 2: Convert to fraction form
    615,533.76/923,592.24 = 426,285.36/x
  3. Step 3: Cross multiply
    615,533.76x = 923,592.24 × 426,285.36
  4. Step 4: Simplify right side
    615,533.76x = 393,713,850,521.61
  5. Step 5: Solve for x
    x = 393,713,850,521.61/615,533.76
  6. Step 6: Final answer
    x = 639,629.99

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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.