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Finding the Fourth Proportional to 480,755.52, 720,828 and 255,977.28

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Solution

The fourth proportional to 480,755.52, 720,828 and 255,977.28 is: 383,803.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,755.52 : 720,828 = 255,977.28 : x
  2. Step 2: Convert to fraction form
    480,755.52/720,828 = 255,977.28/x
  3. Step 3: Cross multiply
    480,755.52x = 720,828 × 255,977.28
  4. Step 4: Simplify right side
    480,755.52x = 184,515,590,787.84
  5. Step 5: Solve for x
    x = 184,515,590,787.84/480,755.52
  6. Step 6: Final answer
    x = 383,803.37

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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.