Home / 9,989,457.42-13,785,451.27-5,405,778.80

Finding the Fourth Proportional to 9,989,457.42, 13,785,451.27 and 5,405,778.80

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Solution

The fourth proportional to 9,989,457.42, 13,785,451.27 and 5,405,778.80 is: 7,459,974.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,989,457.42 : 13,785,451.27 = 5,405,778.80 : x
  2. Step 2: Convert to fraction form
    9,989,457.42/13,785,451.27 = 5,405,778.80/x
  3. Step 3: Cross multiply
    9,989,457.42x = 13,785,451.27 × 5,405,778.80
  4. Step 4: Simplify right side
    9,989,457.42x = 74,521,100,223,799.08
  5. Step 5: Solve for x
    x = 74,521,100,223,799.08/9,989,457.42
  6. Step 6: Final answer
    x = 7,459,974.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.