Home / 721,822.98-996,124.56-399,563.13

Finding the Fourth Proportional to 721,822.98, 996,124.56 and 399,563.13

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Solution

The fourth proportional to 721,822.98, 996,124.56 and 399,563.13 is: 551,402.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,822.98 : 996,124.56 = 399,563.13 : x
  2. Step 2: Convert to fraction form
    721,822.98/996,124.56 = 399,563.13/x
  3. Step 3: Cross multiply
    721,822.98x = 996,124.56 × 399,563.13
  4. Step 4: Simplify right side
    721,822.98x = 398,014,647,063.47
  5. Step 5: Solve for x
    x = 398,014,647,063.47/721,822.98
  6. Step 6: Final answer
    x = 551,402.02

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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.