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Finding the Fourth Proportional to 666,682.56, 920,043.90 and 364,876.56

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Solution

The fourth proportional to 666,682.56, 920,043.90 and 364,876.56 is: 503,541.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,682.56 : 920,043.90 = 364,876.56 : x
  2. Step 2: Convert to fraction form
    666,682.56/920,043.90 = 364,876.56/x
  3. Step 3: Cross multiply
    666,682.56x = 920,043.90 × 364,876.56
  4. Step 4: Simplify right side
    666,682.56x = 335,702,453,280.98
  5. Step 5: Solve for x
    x = 335,702,453,280.98/666,682.56
  6. Step 6: Final answer
    x = 503,541.68

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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.