Home / 1,389,919.65-2,086,227.67-670,767.47

Finding the Fourth Proportional to 1,389,919.65, 2,086,227.67 and 670,767.47

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Solution

The fourth proportional to 1,389,919.65, 2,086,227.67 and 670,767.47 is: 1,006,801.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,919.65 : 2,086,227.67 = 670,767.47 : x
  2. Step 2: Convert to fraction form
    1,389,919.65/2,086,227.67 = 670,767.47/x
  3. Step 3: Cross multiply
    1,389,919.65x = 2,086,227.67 × 670,767.47
  4. Step 4: Simplify right side
    1,389,919.65x = 1,399,373,642,264.92
  5. Step 5: Solve for x
    x = 1,399,373,642,264.92/1,389,919.65
  6. Step 6: Final answer
    x = 1,006,801.83

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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.