Home / 811,642.32-1,120,099.43-449,060.31

Finding the Fourth Proportional to 811,642.32, 1,120,099.43 and 449,060.31

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Solution

The fourth proportional to 811,642.32, 1,120,099.43 and 449,060.31 is: 619,721.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,642.32 : 1,120,099.43 = 449,060.31 : x
  2. Step 2: Convert to fraction form
    811,642.32/1,120,099.43 = 449,060.31/x
  3. Step 3: Cross multiply
    811,642.32x = 1,120,099.43 × 449,060.31
  4. Step 4: Simplify right side
    811,642.32x = 502,992,198,389.27
  5. Step 5: Solve for x
    x = 502,992,198,389.27/811,642.32
  6. Step 6: Final answer
    x = 619,721.50

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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.