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Finding the Fourth Proportional to 489,969.80, 733,917.90 and 489,969.80

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Solution

The fourth proportional to 489,969.80, 733,917.90 and 489,969.80 is: 733,917.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,969.80 : 733,917.90 = 489,969.80 : x
  2. Step 2: Convert to fraction form
    489,969.80/733,917.90 = 489,969.80/x
  3. Step 3: Cross multiply
    489,969.80x = 733,917.90 × 489,969.80
  4. Step 4: Simplify right side
    489,969.80x = 359,597,606,679.42
  5. Step 5: Solve for x
    x = 359,597,606,679.42/489,969.80
  6. Step 6: Final answer
    x = 733,917.90

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1.5x scale

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.