Home / 738,943.28-1,019,741.14-399,411.54

Finding the Fourth Proportional to 738,943.28, 1,019,741.14 and 399,411.54

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Solution

The fourth proportional to 738,943.28, 1,019,741.14 and 399,411.54 is: 551,187.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,943.28 : 1,019,741.14 = 399,411.54 : x
  2. Step 2: Convert to fraction form
    738,943.28/1,019,741.14 = 399,411.54/x
  3. Step 3: Cross multiply
    738,943.28x = 1,019,741.14 × 399,411.54
  4. Step 4: Simplify right side
    738,943.28x = 407,296,379,128.76
  5. Step 5: Solve for x
    x = 407,296,379,128.76/738,943.28
  6. Step 6: Final answer
    x = 551,187.61

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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.