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Finding the Fourth Proportional to 6,920,509.05, 9,550,592.65 and 3,980,326.96

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Solution

The fourth proportional to 6,920,509.05, 9,550,592.65 and 3,980,326.96 is: 5,493,018.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,920,509.05 : 9,550,592.65 = 3,980,326.96 : x
  2. Step 2: Convert to fraction form
    6,920,509.05/9,550,592.65 = 3,980,326.96/x
  3. Step 3: Cross multiply
    6,920,509.05x = 9,550,592.65 × 3,980,326.96
  4. Step 4: Simplify right side
    6,920,509.05x = 38,014,481,374,945.55
  5. Step 5: Solve for x
    x = 38,014,481,374,945.55/6,920,509.05
  6. Step 6: Final answer
    x = 5,493,018.09

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1.5x scale

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.