Home / 768,745.69-1,153,118.84-207,780.19

Finding the Fourth Proportional to 768,745.69, 1,153,118.84 and 207,780.19

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Solution

The fourth proportional to 768,745.69, 1,153,118.84 and 207,780.19 is: 311,670.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,745.69 : 1,153,118.84 = 207,780.19 : x
  2. Step 2: Convert to fraction form
    768,745.69/1,153,118.84 = 207,780.19/x
  3. Step 3: Cross multiply
    768,745.69x = 1,153,118.84 × 207,780.19
  4. Step 4: Simplify right side
    768,745.69x = 239,595,247,746.08
  5. Step 5: Solve for x
    x = 239,595,247,746.08/768,745.69
  6. Step 6: Final answer
    x = 311,670.36

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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.