Home / 1,420,511.51-2,131,082.12-409,554.58

Finding the Fourth Proportional to 1,420,511.51, 2,131,082.12 and 409,554.58

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Solution

The fourth proportional to 1,420,511.51, 2,131,082.12 and 409,554.58 is: 614,422.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,420,511.51 : 2,131,082.12 = 409,554.58 : x
  2. Step 2: Convert to fraction form
    1,420,511.51/2,131,082.12 = 409,554.58/x
  3. Step 3: Cross multiply
    1,420,511.51x = 2,131,082.12 × 409,554.58
  4. Step 4: Simplify right side
    1,420,511.51x = 872,794,442,602.11
  5. Step 5: Solve for x
    x = 872,794,442,602.11/1,420,511.51
  6. Step 6: Final answer
    x = 614,422.65

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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.