Home / 728,916.62-1,006,105.01-423,091.53

Finding the Fourth Proportional to 728,916.62, 1,006,105.01 and 423,091.53

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Solution

The fourth proportional to 728,916.62, 1,006,105.01 and 423,091.53 is: 583,982.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,916.62 : 1,006,105.01 = 423,091.53 : x
  2. Step 2: Convert to fraction form
    728,916.62/1,006,105.01 = 423,091.53/x
  3. Step 3: Cross multiply
    728,916.62x = 1,006,105.01 × 423,091.53
  4. Step 4: Simplify right side
    728,916.62x = 425,674,508,021.57
  5. Step 5: Solve for x
    x = 425,674,508,021.57/728,916.62
  6. Step 6: Final answer
    x = 583,982.44

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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.