Home / 1,299,206.20-1,948,809.30-820,909.30

Finding the Fourth Proportional to 1,299,206.20, 1,948,809.30 and 820,909.30

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Solution

The fourth proportional to 1,299,206.20, 1,948,809.30 and 820,909.30 is: 1,231,363.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,299,206.20 : 1,948,809.30 = 820,909.30 : x
  2. Step 2: Convert to fraction form
    1,299,206.20/1,948,809.30 = 820,909.30/x
  3. Step 3: Cross multiply
    1,299,206.20x = 1,948,809.30 × 820,909.30
  4. Step 4: Simplify right side
    1,299,206.20x = 1,599,795,678,296.49
  5. Step 5: Solve for x
    x = 1,599,795,678,296.49/1,299,206.20
  6. Step 6: Final answer
    x = 1,231,363.95

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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.