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Finding the Fourth Proportional to 499,050.80, 747,409.80 and 489,028.40

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Solution

The fourth proportional to 499,050.80, 747,409.80 and 489,028.40 is: 732,399.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,050.80 : 747,409.80 = 489,028.40 : x
  2. Step 2: Convert to fraction form
    499,050.80/747,409.80 = 489,028.40/x
  3. Step 3: Cross multiply
    499,050.80x = 747,409.80 × 489,028.40
  4. Step 4: Simplify right side
    499,050.80x = 365,504,618,638.32
  5. Step 5: Solve for x
    x = 365,504,618,638.32/499,050.80
  6. Step 6: Final answer
    x = 732,399.62

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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.