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Finding the Fourth Proportional to 593,420.40, 818,919.20 and 321,495.20

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Solution

The fourth proportional to 593,420.40, 818,919.20 and 321,495.20 is: 443,662.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    593,420.40 : 818,919.20 = 321,495.20 : x
  2. Step 2: Convert to fraction form
    593,420.40/818,919.20 = 321,495.20/x
  3. Step 3: Cross multiply
    593,420.40x = 818,919.20 × 321,495.20
  4. Step 4: Simplify right side
    593,420.40x = 263,278,591,987.84
  5. Step 5: Solve for x
    x = 263,278,591,987.84/593,420.40
  6. Step 6: Final answer
    x = 443,662.86

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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.