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Finding the Fourth Proportional to 680,126.83, 938,217.29 and 404,288.48

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Solution

The fourth proportional to 680,126.83, 938,217.29 and 404,288.48 is: 557,705.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,126.83 : 938,217.29 = 404,288.48 : x
  2. Step 2: Convert to fraction form
    680,126.83/938,217.29 = 404,288.48/x
  3. Step 3: Cross multiply
    680,126.83x = 938,217.29 × 404,288.48
  4. Step 4: Simplify right side
    680,126.83x = 379,310,437,788.34
  5. Step 5: Solve for x
    x = 379,310,437,788.34/680,126.83
  6. Step 6: Final answer
    x = 557,705.45

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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.