Home / 851,069.60-1,276,604.40-611,921.15

Finding the Fourth Proportional to 851,069.60, 1,276,604.40 and 611,921.15

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Solution

The fourth proportional to 851,069.60, 1,276,604.40 and 611,921.15 is: 917,881.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,069.60 : 1,276,604.40 = 611,921.15 : x
  2. Step 2: Convert to fraction form
    851,069.60/1,276,604.40 = 611,921.15/x
  3. Step 3: Cross multiply
    851,069.60x = 1,276,604.40 × 611,921.15
  4. Step 4: Simplify right side
    851,069.60x = 781,181,232,543.06
  5. Step 5: Solve for x
    x = 781,181,232,543.06/851,069.60
  6. Step 6: Final answer
    x = 917,881.73

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Double scale
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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.