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Finding the Fourth Proportional to 515,442.24, 711,334.71 and 321,964.56

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Solution

The fourth proportional to 515,442.24, 711,334.71 and 321,964.56 is: 444,326.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,442.24 : 711,334.71 = 321,964.56 : x
  2. Step 2: Convert to fraction form
    515,442.24/711,334.71 = 321,964.56/x
  3. Step 3: Cross multiply
    515,442.24x = 711,334.71 × 321,964.56
  4. Step 4: Simplify right side
    515,442.24x = 229,024,566,917.88
  5. Step 5: Solve for x
    x = 229,024,566,917.88/515,442.24
  6. Step 6: Final answer
    x = 444,326.35

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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.