Home / 9,989,456.92-13,785,450.58-5,405,778.30

Finding the Fourth Proportional to 9,989,456.92, 13,785,450.58 and 5,405,778.30

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Solution

The fourth proportional to 9,989,456.92, 13,785,450.58 and 5,405,778.30 is: 7,459,974.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,989,456.92 : 13,785,450.58 = 5,405,778.30 : x
  2. Step 2: Convert to fraction form
    9,989,456.92/13,785,450.58 = 5,405,778.30/x
  3. Step 3: Cross multiply
    9,989,456.92x = 13,785,450.58 × 5,405,778.30
  4. Step 4: Simplify right side
    9,989,456.92x = 74,521,089,532,159.16
  5. Step 5: Solve for x
    x = 74,521,089,532,159.16/9,989,456.92
  6. Step 6: Final answer
    x = 7,459,974.06

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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.