Home / 1,720,939.40-2,581,409.10-1,245,393.80

Finding the Fourth Proportional to 1,720,939.40, 2,581,409.10 and 1,245,393.80

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Solution

The fourth proportional to 1,720,939.40, 2,581,409.10 and 1,245,393.80 is: 1,868,090.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,720,939.40 : 2,581,409.10 = 1,245,393.80 : x
  2. Step 2: Convert to fraction form
    1,720,939.40/2,581,409.10 = 1,245,393.80/x
  3. Step 3: Cross multiply
    1,720,939.40x = 2,581,409.10 × 1,245,393.80
  4. Step 4: Simplify right side
    1,720,939.40x = 3,214,870,888,403.58
  5. Step 5: Solve for x
    x = 3,214,870,888,403.58/1,720,939.40
  6. Step 6: Final answer
    x = 1,868,090.70

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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.