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Finding the Fourth Proportional to 395,921.20, 593,881.80 and 390,016.30

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Solution

The fourth proportional to 395,921.20, 593,881.80 and 390,016.30 is: 585,024.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,921.20 : 593,881.80 = 390,016.30 : x
  2. Step 2: Convert to fraction form
    395,921.20/593,881.80 = 390,016.30/x
  3. Step 3: Cross multiply
    395,921.20x = 593,881.80 × 390,016.30
  4. Step 4: Simplify right side
    395,921.20x = 231,623,582,273.34
  5. Step 5: Solve for x
    x = 231,623,582,273.34/395,921.20
  6. Step 6: Final answer
    x = 585,024.45

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Similar ratio
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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.