Home / 680,987.85-1,021,479.01-207,671.83

Finding the Fourth Proportional to 680,987.85, 1,021,479.01 and 207,671.83

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Solution

The fourth proportional to 680,987.85, 1,021,479.01 and 207,671.83 is: 311,506.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,987.85 : 1,021,479.01 = 207,671.83 : x
  2. Step 2: Convert to fraction form
    680,987.85/1,021,479.01 = 207,671.83/x
  3. Step 3: Cross multiply
    680,987.85x = 1,021,479.01 × 207,671.83
  4. Step 4: Simplify right side
    680,987.85x = 212,132,415,313.29
  5. Step 5: Solve for x
    x = 212,132,415,313.29/680,987.85
  6. Step 6: Final answer
    x = 311,506.90

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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.