Home / 738,982.54-1,019,795.47-399,450.79

Finding the Fourth Proportional to 738,982.54, 1,019,795.47 and 399,450.79

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Solution

The fourth proportional to 738,982.54, 1,019,795.47 and 399,450.79 is: 551,241.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,982.54 : 1,019,795.47 = 399,450.79 : x
  2. Step 2: Convert to fraction form
    738,982.54/1,019,795.47 = 399,450.79/x
  3. Step 3: Cross multiply
    738,982.54x = 1,019,795.47 × 399,450.79
  4. Step 4: Simplify right side
    738,982.54x = 407,358,106,406.04
  5. Step 5: Solve for x
    x = 407,358,106,406.04/738,982.54
  6. Step 6: Final answer
    x = 551,241.85

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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.