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Finding the Fourth Proportional to 528,500.52, 792,972.90 and 328,987.80

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Solution

The fourth proportional to 528,500.52, 792,972.90 and 328,987.80 is: 493,619.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,500.52 : 792,972.90 = 328,987.80 : x
  2. Step 2: Convert to fraction form
    528,500.52/792,972.90 = 328,987.80/x
  3. Step 3: Cross multiply
    528,500.52x = 792,972.90 × 328,987.80
  4. Step 4: Simplify right side
    528,500.52x = 260,878,409,830.62
  5. Step 5: Solve for x
    x = 260,878,409,830.62/528,500.52
  6. Step 6: Final answer
    x = 493,619.97

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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.