Home / 728,416.80-1,092,625.20-612,943.20

Finding the Fourth Proportional to 728,416.80, 1,092,625.20 and 612,943.20

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Solution

The fourth proportional to 728,416.80, 1,092,625.20 and 612,943.20 is: 919,414.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,416.80 : 1,092,625.20 = 612,943.20 : x
  2. Step 2: Convert to fraction form
    728,416.80/1,092,625.20 = 612,943.20/x
  3. Step 3: Cross multiply
    728,416.80x = 1,092,625.20 × 612,943.20
  4. Step 4: Simplify right side
    728,416.80x = 669,717,186,488.64
  5. Step 5: Solve for x
    x = 669,717,186,488.64/728,416.80
  6. Step 6: Final answer
    x = 919,414.80

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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.