Home / 811,939.74-1,120,468.59-449,364.30

Finding the Fourth Proportional to 811,939.74, 1,120,468.59 and 449,364.30

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Solution

The fourth proportional to 811,939.74, 1,120,468.59 and 449,364.30 is: 620,118.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,939.74 : 1,120,468.59 = 449,364.30 : x
  2. Step 2: Convert to fraction form
    811,939.74/1,120,468.59 = 449,364.30/x
  3. Step 3: Cross multiply
    811,939.74x = 1,120,468.59 × 449,364.30
  4. Step 4: Simplify right side
    811,939.74x = 503,498,583,617.34
  5. Step 5: Solve for x
    x = 503,498,583,617.34/811,939.74
  6. Step 6: Final answer
    x = 620,118.17

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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.