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Finding the Fourth Proportional to 647,855.36, 894,034.40 and 357,469.60

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Solution

The fourth proportional to 647,855.36, 894,034.40 and 357,469.60 is: 493,304.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,855.36 : 894,034.40 = 357,469.60 : x
  2. Step 2: Convert to fraction form
    647,855.36/894,034.40 = 357,469.60/x
  3. Step 3: Cross multiply
    647,855.36x = 894,034.40 × 357,469.60
  4. Step 4: Simplify right side
    647,855.36x = 319,590,119,354.24
  5. Step 5: Solve for x
    x = 319,590,119,354.24/647,855.36
  6. Step 6: Final answer
    x = 493,304.74

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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.