Home / 1,271,922.81-1,908,179.12-418,963.78

Finding the Fourth Proportional to 1,271,922.81, 1,908,179.12 and 418,963.78

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Solution

The fourth proportional to 1,271,922.81, 1,908,179.12 and 418,963.78 is: 628,542.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,271,922.81 : 1,908,179.12 = 418,963.78 : x
  2. Step 2: Convert to fraction form
    1,271,922.81/1,908,179.12 = 418,963.78/x
  3. Step 3: Cross multiply
    1,271,922.81x = 1,908,179.12 × 418,963.78
  4. Step 4: Simplify right side
    1,271,922.81x = 799,457,937,032.27
  5. Step 5: Solve for x
    x = 799,457,937,032.27/1,271,922.81
  6. Step 6: Final answer
    x = 628,542.81

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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.