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Finding the Fourth Proportional to 559,945.39, 772,725.42 and 305,296.58

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Solution

The fourth proportional to 559,945.39, 772,725.42 and 305,296.58 is: 421,309.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,945.39 : 772,725.42 = 305,296.58 : x
  2. Step 2: Convert to fraction form
    559,945.39/772,725.42 = 305,296.58/x
  3. Step 3: Cross multiply
    559,945.39x = 772,725.42 × 305,296.58
  4. Step 4: Simplify right side
    559,945.39x = 235,910,428,005.06
  5. Step 5: Solve for x
    x = 235,910,428,005.06/559,945.39
  6. Step 6: Final answer
    x = 421,309.71

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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.