Home / 563,928.31-778,222.79-305,805.07

Finding the Fourth Proportional to 563,928.31, 778,222.79 and 305,805.07

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Solution

The fourth proportional to 563,928.31, 778,222.79 and 305,805.07 is: 422,011.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,928.31 : 778,222.79 = 305,805.07 : x
  2. Step 2: Convert to fraction form
    563,928.31/778,222.79 = 305,805.07/x
  3. Step 3: Cross multiply
    563,928.31x = 778,222.79 × 305,805.07
  4. Step 4: Simplify right side
    563,928.31x = 237,984,475,362.07
  5. Step 5: Solve for x
    x = 237,984,475,362.07/563,928.31
  6. Step 6: Final answer
    x = 422,011.93

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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.