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Finding the Fourth Proportional to 528,241.20, 790,100.47 and 489,951.60

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Solution

The fourth proportional to 528,241.20, 790,100.47 and 489,951.60 is: 732,829.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,241.20 : 790,100.47 = 489,951.60 : x
  2. Step 2: Convert to fraction form
    528,241.20/790,100.47 = 489,951.60/x
  3. Step 3: Cross multiply
    528,241.20x = 790,100.47 × 489,951.60
  4. Step 4: Simplify right side
    528,241.20x = 387,110,989,437.25
  5. Step 5: Solve for x
    x = 387,110,989,437.25/528,241.20
  6. Step 6: Final answer
    x = 732,829.98

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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.