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Finding the Fourth Proportional to 667,240.32, 920,800.80 and 365,436.48

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Solution

The fourth proportional to 667,240.32, 920,800.80 and 365,436.48 is: 504,307.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,240.32 : 920,800.80 = 365,436.48 : x
  2. Step 2: Convert to fraction form
    667,240.32/920,800.80 = 365,436.48/x
  3. Step 3: Cross multiply
    667,240.32x = 920,800.80 × 365,436.48
  4. Step 4: Simplify right side
    667,240.32x = 336,494,203,133.18
  5. Step 5: Solve for x
    x = 336,494,203,133.18/667,240.32
  6. Step 6: Final answer
    x = 504,307.36

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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.