Home / 739,109.84-1,019,971.32-399,578

Finding the Fourth Proportional to 739,109.84, 1,019,971.32 and 399,578

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Solution

The fourth proportional to 739,109.84, 1,019,971.32 and 399,578 is: 551,417.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,109.84 : 1,019,971.32 = 399,578 : x
  2. Step 2: Convert to fraction form
    739,109.84/1,019,971.32 = 399,578/x
  3. Step 3: Cross multiply
    739,109.84x = 1,019,971.32 × 399,578
  4. Step 4: Simplify right side
    739,109.84x = 407,558,100,102.96
  5. Step 5: Solve for x
    x = 407,558,100,102.96/739,109.84
  6. Step 6: Final answer
    x = 551,417.50

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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.