Home / 805,535.80-1,207,266.90-489,657.40

Finding the Fourth Proportional to 805,535.80, 1,207,266.90 and 489,657.40

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Solution

The fourth proportional to 805,535.80, 1,207,266.90 and 489,657.40 is: 733,855.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,535.80 : 1,207,266.90 = 489,657.40 : x
  2. Step 2: Convert to fraction form
    805,535.80/1,207,266.90 = 489,657.40/x
  3. Step 3: Cross multiply
    805,535.80x = 1,207,266.90 × 489,657.40
  4. Step 4: Simplify right side
    805,535.80x = 591,147,171,360.06
  5. Step 5: Solve for x
    x = 591,147,171,360.06/805,535.80
  6. Step 6: Final answer
    x = 733,855.87

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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.