Home / 728,930.63-1,006,124.32-423,105.54

Finding the Fourth Proportional to 728,930.63, 1,006,124.32 and 423,105.54

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Solution

The fourth proportional to 728,930.63, 1,006,124.32 and 423,105.54 is: 584,001.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,930.63 : 1,006,124.32 = 423,105.54 : x
  2. Step 2: Convert to fraction form
    728,930.63/1,006,124.32 = 423,105.54/x
  3. Step 3: Cross multiply
    728,930.63x = 1,006,124.32 × 423,105.54
  4. Step 4: Simplify right side
    728,930.63x = 425,696,773,720.73
  5. Step 5: Solve for x
    x = 425,696,773,720.73/728,930.63
  6. Step 6: Final answer
    x = 584,001.76

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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.