Home / 721,923.02-996,241.71-399,626.30

Finding the Fourth Proportional to 721,923.02, 996,241.71 and 399,626.30

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Solution

The fourth proportional to 721,923.02, 996,241.71 and 399,626.30 is: 551,477.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,923.02 : 996,241.71 = 399,626.30 : x
  2. Step 2: Convert to fraction form
    721,923.02/996,241.71 = 399,626.30/x
  3. Step 3: Cross multiply
    721,923.02x = 996,241.71 × 399,626.30
  4. Step 4: Simplify right side
    721,923.02x = 398,124,388,472.97
  5. Step 5: Solve for x
    x = 398,124,388,472.97/721,923.02
  6. Step 6: Final answer
    x = 551,477.62

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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.