Home / 851,027.10-1,276,540.65-519,251.10

Finding the Fourth Proportional to 851,027.10, 1,276,540.65 and 519,251.10

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Solution

The fourth proportional to 851,027.10, 1,276,540.65 and 519,251.10 is: 778,876.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,027.10 : 1,276,540.65 = 519,251.10 : x
  2. Step 2: Convert to fraction form
    851,027.10/1,276,540.65 = 519,251.10/x
  3. Step 3: Cross multiply
    851,027.10x = 1,276,540.65 × 519,251.10
  4. Step 4: Simplify right side
    851,027.10x = 662,845,136,707.22
  5. Step 5: Solve for x
    x = 662,845,136,707.22/851,027.10
  6. Step 6: Final answer
    x = 778,876.65

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Double scale
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Similar ratio
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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.