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Finding the Fourth Proportional to 528,077.70, 792,019.35 and 328,040.10

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Solution

The fourth proportional to 528,077.70, 792,019.35 and 328,040.10 is: 491,999.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,077.70 : 792,019.35 = 328,040.10 : x
  2. Step 2: Convert to fraction form
    528,077.70/792,019.35 = 328,040.10/x
  3. Step 3: Cross multiply
    528,077.70x = 792,019.35 × 328,040.10
  4. Step 4: Simplify right side
    528,077.70x = 259,814,106,775.94
  5. Step 5: Solve for x
    x = 259,814,106,775.94/528,077.70
  6. Step 6: Final answer
    x = 491,999.77

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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.