Home / 1,021,082.10-1,409,069.94-639,319.38

Finding the Fourth Proportional to 1,021,082.10, 1,409,069.94 and 639,319.38

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Solution

The fourth proportional to 1,021,082.10, 1,409,069.94 and 639,319.38 is: 882,246.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,021,082.10 : 1,409,069.94 = 639,319.38 : x
  2. Step 2: Convert to fraction form
    1,021,082.10/1,409,069.94 = 639,319.38/x
  3. Step 3: Cross multiply
    1,021,082.10x = 1,409,069.94 × 639,319.38
  4. Step 4: Simplify right side
    1,021,082.10x = 900,845,720,417.44
  5. Step 5: Solve for x
    x = 900,845,720,417.44/1,021,082.10
  6. Step 6: Final answer
    x = 882,246.12

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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.