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Finding the Fourth Proportional to 512,393.22, 769,058.55 and 259,848.03

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Solution

The fourth proportional to 512,393.22, 769,058.55 and 259,848.03 is: 390,009.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,393.22 : 769,058.55 = 259,848.03 : x
  2. Step 2: Convert to fraction form
    512,393.22/769,058.55 = 259,848.03/x
  3. Step 3: Cross multiply
    512,393.22x = 769,058.55 × 259,848.03
  4. Step 4: Simplify right side
    512,393.22x = 199,838,349,172.16
  5. Step 5: Solve for x
    x = 199,838,349,172.16/512,393.22
  6. Step 6: Final answer
    x = 390,009.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.