Home / 861,028.61-1,188,276.27-479,056.19

Finding the Fourth Proportional to 861,028.61, 1,188,276.27 and 479,056.19

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Solution

The fourth proportional to 861,028.61, 1,188,276.27 and 479,056.19 is: 661,129.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,028.61 : 1,188,276.27 = 479,056.19 : x
  2. Step 2: Convert to fraction form
    861,028.61/1,188,276.27 = 479,056.19/x
  3. Step 3: Cross multiply
    861,028.61x = 1,188,276.27 × 479,056.19
  4. Step 4: Simplify right side
    861,028.61x = 569,251,102,573.61
  5. Step 5: Solve for x
    x = 569,251,102,573.61/861,028.61
  6. Step 6: Final answer
    x = 661,129.14

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Half scale
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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.