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Finding the Fourth Proportional to 660,955.38, 912,123.89 and 359,149.38

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Solution

The fourth proportional to 660,955.38, 912,123.89 and 359,149.38 is: 495,629.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,955.38 : 912,123.89 = 359,149.38 : x
  2. Step 2: Convert to fraction form
    660,955.38/912,123.89 = 359,149.38/x
  3. Step 3: Cross multiply
    660,955.38x = 912,123.89 × 359,149.38
  4. Step 4: Simplify right side
    660,955.38x = 327,588,729,576.69
  5. Step 5: Solve for x
    x = 327,588,729,576.69/660,955.38
  6. Step 6: Final answer
    x = 495,629.11

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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.