Home / 685,072.80-1,027,609.20-648,331.20

Finding the Fourth Proportional to 685,072.80, 1,027,609.20 and 648,331.20

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Solution

The fourth proportional to 685,072.80, 1,027,609.20 and 648,331.20 is: 972,496.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,072.80 : 1,027,609.20 = 648,331.20 : x
  2. Step 2: Convert to fraction form
    685,072.80/1,027,609.20 = 648,331.20/x
  3. Step 3: Cross multiply
    685,072.80x = 1,027,609.20 × 648,331.20
  4. Step 4: Simplify right side
    685,072.80x = 666,231,105,767.04
  5. Step 5: Solve for x
    x = 666,231,105,767.04/685,072.80
  6. Step 6: Final answer
    x = 972,496.80

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1.5x scale

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.