Home / 728,192.74-1,091,531.26-407,874.98

Finding the Fourth Proportional to 728,192.74, 1,091,531.26 and 407,874.98

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Solution

The fourth proportional to 728,192.74, 1,091,531.26 and 407,874.98 is: 611,387.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,192.74 : 1,091,531.26 = 407,874.98 : x
  2. Step 2: Convert to fraction form
    728,192.74/1,091,531.26 = 407,874.98/x
  3. Step 3: Cross multiply
    728,192.74x = 1,091,531.26 × 407,874.98
  4. Step 4: Simplify right side
    728,192.74x = 445,208,283,344.84
  5. Step 5: Solve for x
    x = 445,208,283,344.84/728,192.74
  6. Step 6: Final answer
    x = 611,387.98

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1.5x scale

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.