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Finding the Fourth Proportional to 639,585.60, 882,630.72 and 349,198.08

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Solution

The fourth proportional to 639,585.60, 882,630.72 and 349,198.08 is: 481,894.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,585.60 : 882,630.72 = 349,198.08 : x
  2. Step 2: Convert to fraction form
    639,585.60/882,630.72 = 349,198.08/x
  3. Step 3: Cross multiply
    639,585.60x = 882,630.72 × 349,198.08
  4. Step 4: Simplify right side
    639,585.60x = 308,212,952,773.02
  5. Step 5: Solve for x
    x = 308,212,952,773.02/639,585.60
  6. Step 6: Final answer
    x = 481,894.77

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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.