Home / 851,913.20-1,276,314.60-519,100.40

Finding the Fourth Proportional to 851,913.20, 1,276,314.60 and 519,100.40

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Solution

The fourth proportional to 851,913.20, 1,276,314.60 and 519,100.40 is: 777,702.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,913.20 : 1,276,314.60 = 519,100.40 : x
  2. Step 2: Convert to fraction form
    851,913.20/1,276,314.60 = 519,100.40/x
  3. Step 3: Cross multiply
    851,913.20x = 1,276,314.60 × 519,100.40
  4. Step 4: Simplify right side
    851,913.20x = 662,535,419,385.84
  5. Step 5: Solve for x
    x = 662,535,419,385.84/851,913.20
  6. Step 6: Final answer
    x = 777,702.96

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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.