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Finding the Fourth Proportional to 616,678.49, 851,022.63 and 344,761.49

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Solution

The fourth proportional to 616,678.49, 851,022.63 and 344,761.49 is: 475,774.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,678.49 : 851,022.63 = 344,761.49 : x
  2. Step 2: Convert to fraction form
    616,678.49/851,022.63 = 344,761.49/x
  3. Step 3: Cross multiply
    616,678.49x = 851,022.63 × 344,761.49
  4. Step 4: Simplify right side
    616,678.49x = 293,399,829,942.52
  5. Step 5: Solve for x
    x = 293,399,829,942.52/616,678.49
  6. Step 6: Final answer
    x = 475,774.39

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1.5x scale

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.