Home / 1,206,856.20-1,809,749.70-407,920.80

Finding the Fourth Proportional to 1,206,856.20, 1,809,749.70 and 407,920.80

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Solution

The fourth proportional to 1,206,856.20, 1,809,749.70 and 407,920.80 is: 611,700.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,206,856.20 : 1,809,749.70 = 407,920.80 : x
  2. Step 2: Convert to fraction form
    1,206,856.20/1,809,749.70 = 407,920.80/x
  3. Step 3: Cross multiply
    1,206,856.20x = 1,809,749.70 × 407,920.80
  4. Step 4: Simplify right side
    1,206,856.20x = 738,234,545,423.76
  5. Step 5: Solve for x
    x = 738,234,545,423.76/1,206,856.20
  6. Step 6: Final answer
    x = 611,700.50

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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.