Home / 7,129,343.89-9,838,496.82-3,866,157.64

Finding the Fourth Proportional to 7,129,343.89, 9,838,496.82 and 3,866,157.64

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Solution

The fourth proportional to 7,129,343.89, 9,838,496.82 and 3,866,157.64 is: 5,335,298.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,129,343.89 : 9,838,496.82 = 3,866,157.64 : x
  2. Step 2: Convert to fraction form
    7,129,343.89/9,838,496.82 = 3,866,157.64/x
  3. Step 3: Cross multiply
    7,129,343.89x = 9,838,496.82 × 3,866,157.64
  4. Step 4: Simplify right side
    7,129,343.89x = 38,037,179,673,554.91
  5. Step 5: Solve for x
    x = 38,037,179,673,554.91/7,129,343.89
  6. Step 6: Final answer
    x = 5,335,298.77

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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.