Home / 685,125.70-1,027,688.55-657,132.10

Finding the Fourth Proportional to 685,125.70, 1,027,688.55 and 657,132.10

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Solution

The fourth proportional to 685,125.70, 1,027,688.55 and 657,132.10 is: 985,698.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,125.70 : 1,027,688.55 = 657,132.10 : x
  2. Step 2: Convert to fraction form
    685,125.70/1,027,688.55 = 657,132.10/x
  3. Step 3: Cross multiply
    685,125.70x = 1,027,688.55 × 657,132.10
  4. Step 4: Simplify right side
    685,125.70x = 675,327,135,007.46
  5. Step 5: Solve for x
    x = 675,327,135,007.46/685,125.70
  6. Step 6: Final answer
    x = 985,698.15

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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.