Home / 1,271,921.81-1,908,177.62-418,962.78

Finding the Fourth Proportional to 1,271,921.81, 1,908,177.62 and 418,962.78

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Solution

The fourth proportional to 1,271,921.81, 1,908,177.62 and 418,962.78 is: 628,541.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,271,921.81 : 1,908,177.62 = 418,962.78 : x
  2. Step 2: Convert to fraction form
    1,271,921.81/1,908,177.62 = 418,962.78/x
  3. Step 3: Cross multiply
    1,271,921.81x = 1,908,177.62 × 418,962.78
  4. Step 4: Simplify right side
    1,271,921.81x = 799,455,405,179.43
  5. Step 5: Solve for x
    x = 799,455,405,179.43/1,271,921.81
  6. Step 6: Final answer
    x = 628,541.31

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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.