Home / 738,981.36-1,019,793.51-399,449.61

Finding the Fourth Proportional to 738,981.36, 1,019,793.51 and 399,449.61

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Solution

The fourth proportional to 738,981.36, 1,019,793.51 and 399,449.61 is: 551,240.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,981.36 : 1,019,793.51 = 399,449.61 : x
  2. Step 2: Convert to fraction form
    738,981.36/1,019,793.51 = 399,449.61/x
  3. Step 3: Cross multiply
    738,981.36x = 1,019,793.51 × 399,449.61
  4. Step 4: Simplify right side
    738,981.36x = 407,356,119,850.03
  5. Step 5: Solve for x
    x = 407,356,119,850.03/738,981.36
  6. Step 6: Final answer
    x = 551,240.05

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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.