Home / 738,902.28-1,019,685.30-399,369.48

Finding the Fourth Proportional to 738,902.28, 1,019,685.30 and 399,369.48

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Solution

The fourth proportional to 738,902.28, 1,019,685.30 and 399,369.48 is: 551,129.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,902.28 : 1,019,685.30 = 399,369.48 : x
  2. Step 2: Convert to fraction form
    738,902.28/1,019,685.30 = 399,369.48/x
  3. Step 3: Cross multiply
    738,902.28x = 1,019,685.30 × 399,369.48
  4. Step 4: Simplify right side
    738,902.28x = 407,231,188,024.64
  5. Step 5: Solve for x
    x = 407,231,188,024.64/738,902.28
  6. Step 6: Final answer
    x = 551,129.97

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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.