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Finding the Fourth Proportional to 552,108.71, 761,905.44 and 310,392.36

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Solution

The fourth proportional to 552,108.71, 761,905.44 and 310,392.36 is: 428,338.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,108.71 : 761,905.44 = 310,392.36 : x
  2. Step 2: Convert to fraction form
    552,108.71/761,905.44 = 310,392.36/x
  3. Step 3: Cross multiply
    552,108.71x = 761,905.44 × 310,392.36
  4. Step 4: Simplify right side
    552,108.71x = 236,489,627,618.44
  5. Step 5: Solve for x
    x = 236,489,627,618.44/552,108.71
  6. Step 6: Final answer
    x = 428,338.88

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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.