Home / 910,489.40-1,365,734.10-820,287.80

Finding the Fourth Proportional to 910,489.40, 1,365,734.10 and 820,287.80

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Solution

The fourth proportional to 910,489.40, 1,365,734.10 and 820,287.80 is: 1,230,431.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    910,489.40 : 1,365,734.10 = 820,287.80 : x
  2. Step 2: Convert to fraction form
    910,489.40/1,365,734.10 = 820,287.80/x
  3. Step 3: Cross multiply
    910,489.40x = 1,365,734.10 × 820,287.80
  4. Step 4: Simplify right side
    910,489.40x = 1,120,295,020,273.98
  5. Step 5: Solve for x
    x = 1,120,295,020,273.98/910,489.40
  6. Step 6: Final answer
    x = 1,230,431.70

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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.