Home / 1,389,772.20-2,083,491.90-724,924.20

Finding the Fourth Proportional to 1,389,772.20, 2,083,491.90 and 724,924.20

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Solution

The fourth proportional to 1,389,772.20, 2,083,491.90 and 724,924.20 is: 1,086,777.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,772.20 : 2,083,491.90 = 724,924.20 : x
  2. Step 2: Convert to fraction form
    1,389,772.20/2,083,491.90 = 724,924.20/x
  3. Step 3: Cross multiply
    1,389,772.20x = 2,083,491.90 × 724,924.20
  4. Step 4: Simplify right side
    1,389,772.20x = 1,510,373,698,813.98
  5. Step 5: Solve for x
    x = 1,510,373,698,813.98/1,389,772.20
  6. Step 6: Final answer
    x = 1,086,777.89

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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.