Home / 9,989,458.28-13,785,452.48-5,405,779.70

Finding the Fourth Proportional to 9,989,458.28, 13,785,452.48 and 5,405,779.70

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Solution

The fourth proportional to 9,989,458.28, 13,785,452.48 and 5,405,779.70 is: 7,459,976.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,989,458.28 : 13,785,452.48 = 5,405,779.70 : x
  2. Step 2: Convert to fraction form
    9,989,458.28/13,785,452.48 = 5,405,779.70/x
  3. Step 3: Cross multiply
    9,989,458.28x = 13,785,452.48 × 5,405,779.70
  4. Step 4: Simplify right side
    9,989,458.28x = 74,521,119,171,698.66
  5. Step 5: Solve for x
    x = 74,521,119,171,698.66/9,989,458.28
  6. Step 6: Final answer
    x = 7,459,976.02

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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.