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Finding the Fourth Proportional to 528,070.70, 792,008.85 and 328,033.10

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Solution

The fourth proportional to 528,070.70, 792,008.85 and 328,033.10 is: 491,989.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,070.70 : 792,008.85 = 328,033.10 : x
  2. Step 2: Convert to fraction form
    528,070.70/792,008.85 = 328,033.10/x
  3. Step 3: Cross multiply
    528,070.70x = 792,008.85 × 328,033.10
  4. Step 4: Simplify right side
    528,070.70x = 259,805,118,292.94
  5. Step 5: Solve for x
    x = 259,805,118,292.94/528,070.70
  6. Step 6: Final answer
    x = 491,989.27

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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.