Home / 685,439.70-1,027,364.67-405,192.66

Finding the Fourth Proportional to 685,439.70, 1,027,364.67 and 405,192.66

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Solution

The fourth proportional to 685,439.70, 1,027,364.67 and 405,192.66 is: 607,319.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,439.70 : 1,027,364.67 = 405,192.66 : x
  2. Step 2: Convert to fraction form
    685,439.70/1,027,364.67 = 405,192.66/x
  3. Step 3: Cross multiply
    685,439.70x = 1,027,364.67 × 405,192.66
  4. Step 4: Simplify right side
    685,439.70x = 416,280,623,427.32
  5. Step 5: Solve for x
    x = 416,280,623,427.32/685,439.70
  6. Step 6: Final answer
    x = 607,319.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.