Home / 711,431.20-1,065,764.40-395,322.40

Finding the Fourth Proportional to 711,431.20, 1,065,764.40 and 395,322.40

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Solution

The fourth proportional to 711,431.20, 1,065,764.40 and 395,322.40 is: 592,215.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,431.20 : 1,065,764.40 = 395,322.40 : x
  2. Step 2: Convert to fraction form
    711,431.20/1,065,764.40 = 395,322.40/x
  3. Step 3: Cross multiply
    711,431.20x = 1,065,764.40 × 395,322.40
  4. Step 4: Simplify right side
    711,431.20x = 421,320,540,442.56
  5. Step 5: Solve for x
    x = 421,320,540,442.56/711,431.20
  6. Step 6: Final answer
    x = 592,215.44

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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.