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Finding the Fourth Proportional to 6,519,334.80, 9,778,564.80 and 1,726,921.20

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Solution

The fourth proportional to 6,519,334.80, 9,778,564.80 and 1,726,921.20 is: 2,590,265.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,519,334.80 : 9,778,564.80 = 1,726,921.20 : x
  2. Step 2: Convert to fraction form
    6,519,334.80/9,778,564.80 = 1,726,921.20/x
  3. Step 3: Cross multiply
    6,519,334.80x = 9,778,564.80 × 1,726,921.20
  4. Step 4: Simplify right side
    6,519,334.80x = 16,886,810,858,693.76
  5. Step 5: Solve for x
    x = 16,886,810,858,693.76/6,519,334.80
  6. Step 6: Final answer
    x = 2,590,265.94

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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.