Home / 782,838.49-1,172,264.32-515,789.39

Finding the Fourth Proportional to 782,838.49, 1,172,264.32 and 515,789.39

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Solution

The fourth proportional to 782,838.49, 1,172,264.32 and 515,789.39 is: 772,370.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,838.49 : 1,172,264.32 = 515,789.39 : x
  2. Step 2: Convert to fraction form
    782,838.49/1,172,264.32 = 515,789.39/x
  3. Step 3: Cross multiply
    782,838.49x = 1,172,264.32 × 515,789.39
  4. Step 4: Simplify right side
    782,838.49x = 604,641,497,242.09
  5. Step 5: Solve for x
    x = 604,641,497,242.09/782,838.49
  6. Step 6: Final answer
    x = 772,370.68

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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.