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Finding the Fourth Proportional to 1,969,932.70, 2,952,602.70 and 905,082.40

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Solution

The fourth proportional to 1,969,932.70, 2,952,602.70 and 905,082.40 is: 1,356,568.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,969,932.70 : 2,952,602.70 = 905,082.40 : x
  2. Step 2: Convert to fraction form
    1,969,932.70/2,952,602.70 = 905,082.40/x
  3. Step 3: Cross multiply
    1,969,932.70x = 2,952,602.70 × 905,082.40
  4. Step 4: Simplify right side
    1,969,932.70x = 2,672,348,737,962.48
  5. Step 5: Solve for x
    x = 2,672,348,737,962.48/1,969,932.70
  6. Step 6: Final answer
    x = 1,356,568.55

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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.