Home / 738,905.37-1,019,688.92-399,373.62

Finding the Fourth Proportional to 738,905.37, 1,019,688.92 and 399,373.62

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Solution

The fourth proportional to 738,905.37, 1,019,688.92 and 399,373.62 is: 551,135.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,905.37 : 1,019,688.92 = 399,373.62 : x
  2. Step 2: Convert to fraction form
    738,905.37/1,019,688.92 = 399,373.62/x
  3. Step 3: Cross multiply
    738,905.37x = 1,019,688.92 × 399,373.62
  4. Step 4: Simplify right side
    738,905.37x = 407,236,858,584.90
  5. Step 5: Solve for x
    x = 407,236,858,584.90/738,905.37
  6. Step 6: Final answer
    x = 551,135.33

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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.