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Finding the Fourth Proportional to 570,163.82, 786,784.84 and 315,519.26

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Solution

The fourth proportional to 570,163.82, 786,784.84 and 315,519.26 is: 435,393.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,163.82 : 786,784.84 = 315,519.26 : x
  2. Step 2: Convert to fraction form
    570,163.82/786,784.84 = 315,519.26/x
  3. Step 3: Cross multiply
    570,163.82x = 786,784.84 × 315,519.26
  4. Step 4: Simplify right side
    570,163.82x = 248,245,770,496.02
  5. Step 5: Solve for x
    x = 248,245,770,496.02/570,163.82
  6. Step 6: Final answer
    x = 435,393.76

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Double scale
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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.