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Finding the Fourth Proportional to 661,047.94, 912,227.16 and 374,660.56

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Solution

The fourth proportional to 661,047.94, 912,227.16 and 374,660.56 is: 517,020.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,047.94 : 912,227.16 = 374,660.56 : x
  2. Step 2: Convert to fraction form
    661,047.94/912,227.16 = 374,660.56/x
  3. Step 3: Cross multiply
    661,047.94x = 912,227.16 × 374,660.56
  4. Step 4: Simplify right side
    661,047.94x = 341,775,538,612.81
  5. Step 5: Solve for x
    x = 341,775,538,612.81/661,047.94
  6. Step 6: Final answer
    x = 517,020.81

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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.