Home / 813,875.94-1,219,574.61-413,917.38

Finding the Fourth Proportional to 813,875.94, 1,219,574.61 and 413,917.38

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Solution

The fourth proportional to 813,875.94, 1,219,574.61 and 413,917.38 is: 620,245.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,875.94 : 1,219,574.61 = 413,917.38 : x
  2. Step 2: Convert to fraction form
    813,875.94/1,219,574.61 = 413,917.38/x
  3. Step 3: Cross multiply
    813,875.94x = 1,219,574.61 × 413,917.38
  4. Step 4: Simplify right side
    813,875.94x = 504,803,127,285.72
  5. Step 5: Solve for x
    x = 504,803,127,285.72/813,875.94
  6. Step 6: Final answer
    x = 620,245.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.