Home / 1,284,956.78-1,926,078.85-431,218.96

Finding the Fourth Proportional to 1,284,956.78, 1,926,078.85 and 431,218.96

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Solution

The fourth proportional to 1,284,956.78, 1,926,078.85 and 431,218.96 is: 646,373.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,284,956.78 : 1,926,078.85 = 431,218.96 : x
  2. Step 2: Convert to fraction form
    1,284,956.78/1,926,078.85 = 431,218.96/x
  3. Step 3: Cross multiply
    1,284,956.78x = 1,926,078.85 × 431,218.96
  4. Step 4: Simplify right side
    1,284,956.78x = 830,561,714,298.82
  5. Step 5: Solve for x
    x = 830,561,714,298.82/1,284,956.78
  6. Step 6: Final answer
    x = 646,373.27

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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.