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Finding the Fourth Proportional to 499,048.80, 747,406.80 and 489,026.40

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Solution

The fourth proportional to 499,048.80, 747,406.80 and 489,026.40 is: 732,396.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,048.80 : 747,406.80 = 489,026.40 : x
  2. Step 2: Convert to fraction form
    499,048.80/747,406.80 = 489,026.40/x
  3. Step 3: Cross multiply
    499,048.80x = 747,406.80 × 489,026.40
  4. Step 4: Simplify right side
    499,048.80x = 365,501,656,739.52
  5. Step 5: Solve for x
    x = 365,501,656,739.52/499,048.80
  6. Step 6: Final answer
    x = 732,396.62

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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.