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Finding the Fourth Proportional to 654,671.52, 903,311.24 and 382,686.84

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Solution

The fourth proportional to 654,671.52, 903,311.24 and 382,686.84 is: 528,028.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,671.52 : 903,311.24 = 382,686.84 : x
  2. Step 2: Convert to fraction form
    654,671.52/903,311.24 = 382,686.84/x
  3. Step 3: Cross multiply
    654,671.52x = 903,311.24 × 382,686.84
  4. Step 4: Simplify right side
    654,671.52x = 345,685,322,058.65
  5. Step 5: Solve for x
    x = 345,685,322,058.65/654,671.52
  6. Step 6: Final answer
    x = 528,028.65

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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.