Home / 721,849.05-996,063.89-399,539.52

Finding the Fourth Proportional to 721,849.05, 996,063.89 and 399,539.52

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Solution

The fourth proportional to 721,849.05, 996,063.89 and 399,539.52 is: 551,315.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,849.05 : 996,063.89 = 399,539.52 : x
  2. Step 2: Convert to fraction form
    721,849.05/996,063.89 = 399,539.52/x
  3. Step 3: Cross multiply
    721,849.05x = 996,063.89 × 399,539.52
  4. Step 4: Simplify right side
    721,849.05x = 397,966,886,502.24
  5. Step 5: Solve for x
    x = 397,966,886,502.24/721,849.05
  6. Step 6: Final answer
    x = 551,315.94

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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.