Home / 12,457,908.20-18,686,862.30-3,940,855.40

Finding the Fourth Proportional to 12,457,908.20, 18,686,862.30 and 3,940,855.40

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Solution

The fourth proportional to 12,457,908.20, 18,686,862.30 and 3,940,855.40 is: 5,911,283.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,457,908.20 : 18,686,862.30 = 3,940,855.40 : x
  2. Step 2: Convert to fraction form
    12,457,908.20/18,686,862.30 = 3,940,855.40/x
  3. Step 3: Cross multiply
    12,457,908.20x = 18,686,862.30 × 3,940,855.40
  4. Step 4: Simplify right side
    12,457,908.20x = 73,642,222,204,011.42
  5. Step 5: Solve for x
    x = 73,642,222,204,011.42/12,457,908.20
  6. Step 6: Final answer
    x = 5,911,283.10

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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.