Home / 813,930.22-1,221,070.30-274,240.13

Finding the Fourth Proportional to 813,930.22, 1,221,070.30 and 274,240.13

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Solution

The fourth proportional to 813,930.22, 1,221,070.30 and 274,240.13 is: 411,419.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,930.22 : 1,221,070.30 = 274,240.13 : x
  2. Step 2: Convert to fraction form
    813,930.22/1,221,070.30 = 274,240.13/x
  3. Step 3: Cross multiply
    813,930.22x = 1,221,070.30 × 274,240.13
  4. Step 4: Simplify right side
    813,930.22x = 334,866,471,020.19
  5. Step 5: Solve for x
    x = 334,866,471,020.19/813,930.22
  6. Step 6: Final answer
    x = 411,419.14

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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.