Home / 559,979.79-772,772.88-305,330.97

Finding the Fourth Proportional to 559,979.79, 772,772.88 and 305,330.97

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Solution

The fourth proportional to 559,979.79, 772,772.88 and 305,330.97 is: 421,357.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,979.79 : 772,772.88 = 305,330.97 : x
  2. Step 2: Convert to fraction form
    559,979.79/772,772.88 = 305,330.97/x
  3. Step 3: Cross multiply
    559,979.79x = 772,772.88 × 305,330.97
  4. Step 4: Simplify right side
    559,979.79x = 235,951,493,040.09
  5. Step 5: Solve for x
    x = 235,951,493,040.09/559,979.79
  6. Step 6: Final answer
    x = 421,357.16

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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.