Home / 783,057.87-1,080,649.52-438,900.11

Finding the Fourth Proportional to 783,057.87, 1,080,649.52 and 438,900.11

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Solution

The fourth proportional to 783,057.87, 1,080,649.52 and 438,900.11 is: 605,698.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    783,057.87 : 1,080,649.52 = 438,900.11 : x
  2. Step 2: Convert to fraction form
    783,057.87/1,080,649.52 = 438,900.11/x
  3. Step 3: Cross multiply
    783,057.87x = 1,080,649.52 × 438,900.11
  4. Step 4: Simplify right side
    783,057.87x = 474,297,185,601.70
  5. Step 5: Solve for x
    x = 474,297,185,601.70/783,057.87
  6. Step 6: Final answer
    x = 605,698.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.