Home / 1,311,814.89-1,968,772.10-680,909.13

Finding the Fourth Proportional to 1,311,814.89, 1,968,772.10 and 680,909.13

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Solution

The fourth proportional to 1,311,814.89, 1,968,772.10 and 680,909.13 is: 1,021,908.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,311,814.89 : 1,968,772.10 = 680,909.13 : x
  2. Step 2: Convert to fraction form
    1,311,814.89/1,968,772.10 = 680,909.13/x
  3. Step 3: Cross multiply
    1,311,814.89x = 1,968,772.10 × 680,909.13
  4. Step 4: Simplify right side
    1,311,814.89x = 1,340,554,894,374.73
  5. Step 5: Solve for x
    x = 1,340,554,894,374.73/1,311,814.89
  6. Step 6: Final answer
    x = 1,021,908.58

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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.