Home / 6,642,913.90-9,964,370.85-2,155,189.90

Finding the Fourth Proportional to 6,642,913.90, 9,964,370.85 and 2,155,189.90

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Solution

The fourth proportional to 6,642,913.90, 9,964,370.85 and 2,155,189.90 is: 3,232,784.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,642,913.90 : 9,964,370.85 = 2,155,189.90 : x
  2. Step 2: Convert to fraction form
    6,642,913.90/9,964,370.85 = 2,155,189.90/x
  3. Step 3: Cross multiply
    6,642,913.90x = 9,964,370.85 × 2,155,189.90
  4. Step 4: Simplify right side
    6,642,913.90x = 21,475,111,415,774.41
  5. Step 5: Solve for x
    x = 21,475,111,415,774.41/6,642,913.90
  6. Step 6: Final answer
    x = 3,232,784.85

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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.