Home / 816,874.72-1,127,314.89-449,368.05

Finding the Fourth Proportional to 816,874.72, 1,127,314.89 and 449,368.05

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Solution

The fourth proportional to 816,874.72, 1,127,314.89 and 449,368.05 is: 620,143.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    816,874.72 : 1,127,314.89 = 449,368.05 : x
  2. Step 2: Convert to fraction form
    816,874.72/1,127,314.89 = 449,368.05/x
  3. Step 3: Cross multiply
    816,874.72x = 1,127,314.89 × 449,368.05
  4. Step 4: Simplify right side
    816,874.72x = 506,579,299,346.54
  5. Step 5: Solve for x
    x = 506,579,299,346.54/816,874.72
  6. Step 6: Final answer
    x = 620,143.19

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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.