Home / 7,239,492.78-9,990,619.83-3,976,609.02

Finding the Fourth Proportional to 7,239,492.78, 9,990,619.83 and 3,976,609.02

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Solution

The fourth proportional to 7,239,492.78, 9,990,619.83 and 3,976,609.02 is: 5,487,786.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,239,492.78 : 9,990,619.83 = 3,976,609.02 : x
  2. Step 2: Convert to fraction form
    7,239,492.78/9,990,619.83 = 3,976,609.02/x
  3. Step 3: Cross multiply
    7,239,492.78x = 9,990,619.83 × 3,976,609.02
  4. Step 4: Simplify right side
    7,239,492.78x = 39,728,788,931,368.87
  5. Step 5: Solve for x
    x = 39,728,788,931,368.87/7,239,492.78
  6. Step 6: Final answer
    x = 5,487,786.25

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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.