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Finding the Fourth Proportional to 666,653.21, 919,974.74 and 360,722.89

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Solution

The fourth proportional to 666,653.21, 919,974.74 and 360,722.89 is: 497,793.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,653.21 : 919,974.74 = 360,722.89 : x
  2. Step 2: Convert to fraction form
    666,653.21/919,974.74 = 360,722.89/x
  3. Step 3: Cross multiply
    666,653.21x = 919,974.74 × 360,722.89
  4. Step 4: Simplify right side
    666,653.21x = 331,855,946,939.80
  5. Step 5: Solve for x
    x = 331,855,946,939.80/666,653.21
  6. Step 6: Final answer
    x = 497,793.97

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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.