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Finding the Fourth Proportional to 667,880.40, 921,710.28 and 366,087.12

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Solution

The fourth proportional to 667,880.40, 921,710.28 and 366,087.12 is: 505,219.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,880.40 : 921,710.28 = 366,087.12 : x
  2. Step 2: Convert to fraction form
    667,880.40/921,710.28 = 366,087.12/x
  3. Step 3: Cross multiply
    667,880.40x = 921,710.28 × 366,087.12
  4. Step 4: Simplify right side
    667,880.40x = 337,426,261,879.59
  5. Step 5: Solve for x
    x = 337,426,261,879.59/667,880.40
  6. Step 6: Final answer
    x = 505,219.59

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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.