Home / 852,123.20-1,276,629.60-519,310.40

Finding the Fourth Proportional to 852,123.20, 1,276,629.60 and 519,310.40

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Solution

The fourth proportional to 852,123.20, 1,276,629.60 and 519,310.40 is: 778,017.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    852,123.20 : 1,276,629.60 = 519,310.40 : x
  2. Step 2: Convert to fraction form
    852,123.20/1,276,629.60 = 519,310.40/x
  3. Step 3: Cross multiply
    852,123.20x = 1,276,629.60 × 519,310.40
  4. Step 4: Simplify right side
    852,123.20x = 662,967,028,227.84
  5. Step 5: Solve for x
    x = 662,967,028,227.84/852,123.20
  6. Step 6: Final answer
    x = 778,017.81

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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.