Home / 729,769.40-1,093,669.95-489,199.40

Finding the Fourth Proportional to 729,769.40, 1,093,669.95 and 489,199.40

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Solution

The fourth proportional to 729,769.40, 1,093,669.95 and 489,199.40 is: 733,139.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    729,769.40 : 1,093,669.95 = 489,199.40 : x
  2. Step 2: Convert to fraction form
    729,769.40/1,093,669.95 = 489,199.40/x
  3. Step 3: Cross multiply
    729,769.40x = 1,093,669.95 × 489,199.40
  4. Step 4: Simplify right side
    729,769.40x = 535,022,683,338.03
  5. Step 5: Solve for x
    x = 535,022,683,338.03/729,769.40
  6. Step 6: Final answer
    x = 733,139.38

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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.