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Finding the Fourth Proportional to 648,094.77, 894,121.34 and 405,955.80

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Solution

The fourth proportional to 648,094.77, 894,121.34 and 405,955.80 is: 560,062.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,094.77 : 894,121.34 = 405,955.80 : x
  2. Step 2: Convert to fraction form
    648,094.77/894,121.34 = 405,955.80/x
  3. Step 3: Cross multiply
    648,094.77x = 894,121.34 × 405,955.80
  4. Step 4: Simplify right side
    648,094.77x = 362,973,741,846.99
  5. Step 5: Solve for x
    x = 362,973,741,846.99/648,094.77
  6. Step 6: Final answer
    x = 560,062.75

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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.