Home / 721,411.38-1,082,301.48-422,143.38

Finding the Fourth Proportional to 721,411.38, 1,082,301.48 and 422,143.38

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Solution

The fourth proportional to 721,411.38, 1,082,301.48 and 422,143.38 is: 633,322.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,411.38 : 1,082,301.48 = 422,143.38 : x
  2. Step 2: Convert to fraction form
    721,411.38/1,082,301.48 = 422,143.38/x
  3. Step 3: Cross multiply
    721,411.38x = 1,082,301.48 × 422,143.38
  4. Step 4: Simplify right side
    721,411.38x = 456,886,404,946.20
  5. Step 5: Solve for x
    x = 456,886,404,946.20/721,411.38
  6. Step 6: Final answer
    x = 633,322.98

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1.5x scale

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.