Home / 851,921.20-1,276,326.60-519,108.40

Finding the Fourth Proportional to 851,921.20, 1,276,326.60 and 519,108.40

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Solution

The fourth proportional to 851,921.20, 1,276,326.60 and 519,108.40 is: 777,714.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,921.20 : 1,276,326.60 = 519,108.40 : x
  2. Step 2: Convert to fraction form
    851,921.20/1,276,326.60 = 519,108.40/x
  3. Step 3: Cross multiply
    851,921.20x = 1,276,326.60 × 519,108.40
  4. Step 4: Simplify right side
    851,921.20x = 662,551,859,203.44
  5. Step 5: Solve for x
    x = 662,551,859,203.44/851,921.20
  6. Step 6: Final answer
    x = 777,714.96

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1.5x scale

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.