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Finding the Fourth Proportional to 616,640.18, 851,100.63 and 374,871.50

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Solution

The fourth proportional to 616,640.18, 851,100.63 and 374,871.50 is: 517,406.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,640.18 : 851,100.63 = 374,871.50 : x
  2. Step 2: Convert to fraction form
    616,640.18/851,100.63 = 374,871.50/x
  3. Step 3: Cross multiply
    616,640.18x = 851,100.63 × 374,871.50
  4. Step 4: Simplify right side
    616,640.18x = 319,053,369,819.05
  5. Step 5: Solve for x
    x = 319,053,369,819.05/616,640.18
  6. Step 6: Final answer
    x = 517,406.07

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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.