Home / 845,685.36-1,268,355.78-313,079.76

Finding the Fourth Proportional to 845,685.36, 1,268,355.78 and 313,079.76

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Solution

The fourth proportional to 845,685.36, 1,268,355.78 and 313,079.76 is: 469,555.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    845,685.36 : 1,268,355.78 = 313,079.76 : x
  2. Step 2: Convert to fraction form
    845,685.36/1,268,355.78 = 313,079.76/x
  3. Step 3: Cross multiply
    845,685.36x = 1,268,355.78 × 313,079.76
  4. Step 4: Simplify right side
    845,685.36x = 397,096,523,197.01
  5. Step 5: Solve for x
    x = 397,096,523,197.01/845,685.36
  6. Step 6: Final answer
    x = 469,555.87

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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.