Home / 661,749.82-913,309.42-371,392.36

Finding the Fourth Proportional to 661,749.82, 913,309.42 and 371,392.36

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Solution

The fourth proportional to 661,749.82, 913,309.42 and 371,392.36 is: 512,574.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,749.82 : 913,309.42 = 371,392.36 : x
  2. Step 2: Convert to fraction form
    661,749.82/913,309.42 = 371,392.36/x
  3. Step 3: Cross multiply
    661,749.82x = 913,309.42 × 371,392.36
  4. Step 4: Simplify right side
    661,749.82x = 339,196,140,904.03
  5. Step 5: Solve for x
    x = 339,196,140,904.03/661,749.82
  6. Step 6: Final answer
    x = 512,574.59

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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.