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Finding the Fourth Proportional to 648,450.72, 894,704.40 and 380,126.88

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Solution

The fourth proportional to 648,450.72, 894,704.40 and 380,126.88 is: 524,482.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,450.72 : 894,704.40 = 380,126.88 : x
  2. Step 2: Convert to fraction form
    648,450.72/894,704.40 = 380,126.88/x
  3. Step 3: Cross multiply
    648,450.72x = 894,704.40 × 380,126.88
  4. Step 4: Simplify right side
    648,450.72x = 340,101,192,094.27
  5. Step 5: Solve for x
    x = 340,101,192,094.27/648,450.72
  6. Step 6: Final answer
    x = 524,482.71

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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.