Home / 738,983.54-1,019,796.85-399,451.79

Finding the Fourth Proportional to 738,983.54, 1,019,796.85 and 399,451.79

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Solution

The fourth proportional to 738,983.54, 1,019,796.85 and 399,451.79 is: 551,243.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,983.54 : 1,019,796.85 = 399,451.79 : x
  2. Step 2: Convert to fraction form
    738,983.54/1,019,796.85 = 399,451.79/x
  3. Step 3: Cross multiply
    738,983.54x = 1,019,796.85 × 399,451.79
  4. Step 4: Simplify right side
    738,983.54x = 407,359,677,168.86
  5. Step 5: Solve for x
    x = 407,359,677,168.86/738,983.54
  6. Step 6: Final answer
    x = 551,243.23

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Double scale
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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.