Home / 1,211,763.40-1,817,645.10-413,945.80

Finding the Fourth Proportional to 1,211,763.40, 1,817,645.10 and 413,945.80

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Solution

The fourth proportional to 1,211,763.40, 1,817,645.10 and 413,945.80 is: 620,918.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,763.40 : 1,817,645.10 = 413,945.80 : x
  2. Step 2: Convert to fraction form
    1,211,763.40/1,817,645.10 = 413,945.80/x
  3. Step 3: Cross multiply
    1,211,763.40x = 1,817,645.10 × 413,945.80
  4. Step 4: Simplify right side
    1,211,763.40x = 752,406,555,035.58
  5. Step 5: Solve for x
    x = 752,406,555,035.58/1,211,763.40
  6. Step 6: Final answer
    x = 620,918.70

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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.