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Finding the Fourth Proportional to 667,277.24, 920,908.80 and 380,840.72

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Solution

The fourth proportional to 667,277.24, 920,908.80 and 380,840.72 is: 525,597.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,277.24 : 920,908.80 = 380,840.72 : x
  2. Step 2: Convert to fraction form
    667,277.24/920,908.80 = 380,840.72/x
  3. Step 3: Cross multiply
    667,277.24x = 920,908.80 × 380,840.72
  4. Step 4: Simplify right side
    667,277.24x = 350,719,570,446.34
  5. Step 5: Solve for x
    x = 350,719,570,446.34/667,277.24
  6. Step 6: Final answer
    x = 525,597.98

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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.