Home / 563,989.19-778,299.78-305,871.83

Finding the Fourth Proportional to 563,989.19, 778,299.78 and 305,871.83

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Solution

The fourth proportional to 563,989.19, 778,299.78 and 305,871.83 is: 422,100.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,989.19 : 778,299.78 = 305,871.83 : x
  2. Step 2: Convert to fraction form
    563,989.19/778,299.78 = 305,871.83/x
  3. Step 3: Cross multiply
    563,989.19x = 778,299.78 × 305,871.83
  4. Step 4: Simplify right side
    563,989.19x = 238,059,974,105.70
  5. Step 5: Solve for x
    x = 238,059,974,105.70/563,989.19
  6. Step 6: Final answer
    x = 422,100.25

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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.