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Finding the Fourth Proportional to 528,470.40, 792,122.40 and 291,982.80

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Solution

The fourth proportional to 528,470.40, 792,122.40 and 291,982.80 is: 437,651.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,470.40 : 792,122.40 = 291,982.80 : x
  2. Step 2: Convert to fraction form
    528,470.40/792,122.40 = 291,982.80/x
  3. Step 3: Cross multiply
    528,470.40x = 792,122.40 × 291,982.80
  4. Step 4: Simplify right side
    528,470.40x = 231,286,116,294.72
  5. Step 5: Solve for x
    x = 231,286,116,294.72/528,470.40
  6. Step 6: Final answer
    x = 437,651.98

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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.