Home / 9,989,456.38-13,785,449.80-5,405,777.75

Finding the Fourth Proportional to 9,989,456.38, 13,785,449.80 and 5,405,777.75

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Solution

The fourth proportional to 9,989,456.38, 13,785,449.80 and 5,405,777.75 is: 7,459,973.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,989,456.38 : 13,785,449.80 = 5,405,777.75 : x
  2. Step 2: Convert to fraction form
    9,989,456.38/13,785,449.80 = 5,405,777.75/x
  3. Step 3: Cross multiply
    9,989,456.38x = 13,785,449.80 × 5,405,777.75
  4. Step 4: Simplify right side
    9,989,456.38x = 74,521,077,802,581.95
  5. Step 5: Solve for x
    x = 74,521,077,802,581.95/9,989,456.38
  6. Step 6: Final answer
    x = 7,459,973.29

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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.