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Finding the Fourth Proportional to 528,032.70, 792,049.05 and 317,907.90

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Solution

The fourth proportional to 528,032.70, 792,049.05 and 317,907.90 is: 476,861.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,032.70 : 792,049.05 = 317,907.90 : x
  2. Step 2: Convert to fraction form
    528,032.70/792,049.05 = 317,907.90/x
  3. Step 3: Cross multiply
    528,032.70x = 792,049.05 × 317,907.90
  4. Step 4: Simplify right side
    528,032.70x = 251,798,650,182.50
  5. Step 5: Solve for x
    x = 251,798,650,182.50/528,032.70
  6. Step 6: Final answer
    x = 476,861.85

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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.