Home / 786,853.24-1,086,249.60-515,337.20

Finding the Fourth Proportional to 786,853.24, 1,086,249.60 and 515,337.20

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Solution

The fourth proportional to 786,853.24, 1,086,249.60 and 515,337.20 is: 711,422.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,853.24 : 1,086,249.60 = 515,337.20 : x
  2. Step 2: Convert to fraction form
    786,853.24/1,086,249.60 = 515,337.20/x
  3. Step 3: Cross multiply
    786,853.24x = 1,086,249.60 × 515,337.20
  4. Step 4: Simplify right side
    786,853.24x = 559,784,827,365.12
  5. Step 5: Solve for x
    x = 559,784,827,365.12/786,853.24
  6. Step 6: Final answer
    x = 711,422.15

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Half scale
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Double scale
Find fourth proportional to 786,854.24, 1,086,250.98 and 515,338.20
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.