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Finding the Fourth Proportional to 528,063.60, 789,791.40 and 472,306.80

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Solution

The fourth proportional to 528,063.60, 789,791.40 and 472,306.80 is: 706,399.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,063.60 : 789,791.40 = 472,306.80 : x
  2. Step 2: Convert to fraction form
    528,063.60/789,791.40 = 472,306.80/x
  3. Step 3: Cross multiply
    528,063.60x = 789,791.40 × 472,306.80
  4. Step 4: Simplify right side
    528,063.60x = 373,023,848,801.52
  5. Step 5: Solve for x
    x = 373,023,848,801.52/528,063.60
  6. Step 6: Final answer
    x = 706,399.47

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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.