Home / 728,926.99-1,006,119.32-423,101.90

Finding the Fourth Proportional to 728,926.99, 1,006,119.32 and 423,101.90

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Solution

The fourth proportional to 728,926.99, 1,006,119.32 and 423,101.90 is: 583,996.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,926.99 : 1,006,119.32 = 423,101.90 : x
  2. Step 2: Convert to fraction form
    728,926.99/1,006,119.32 = 423,101.90/x
  3. Step 3: Cross multiply
    728,926.99x = 1,006,119.32 × 423,101.90
  4. Step 4: Simplify right side
    728,926.99x = 425,690,994,863.79
  5. Step 5: Solve for x
    x = 425,690,994,863.79/728,926.99
  6. Step 6: Final answer
    x = 583,996.76

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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.