Home / 8,178,756.07-11,285,128.88-4,914,379.72

Finding the Fourth Proportional to 8,178,756.07, 11,285,128.88 and 4,914,379.72

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Solution

The fourth proportional to 8,178,756.07, 11,285,128.88 and 4,914,379.72 is: 6,780,909.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,178,756.07 : 11,285,128.88 = 4,914,379.72 : x
  2. Step 2: Convert to fraction form
    8,178,756.07/11,285,128.88 = 4,914,379.72/x
  3. Step 3: Cross multiply
    8,178,756.07x = 11,285,128.88 × 4,914,379.72
  4. Step 4: Simplify right side
    8,178,756.07x = 55,459,408,505,458.31
  5. Step 5: Solve for x
    x = 55,459,408,505,458.31/8,178,756.07
  6. Step 6: Final answer
    x = 6,780,909.96

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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.