Home / 686,818.44-1,030,162.05-420,441.84

Finding the Fourth Proportional to 686,818.44, 1,030,162.05 and 420,441.84

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Solution

The fourth proportional to 686,818.44, 1,030,162.05 and 420,441.84 is: 630,622.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,818.44 : 1,030,162.05 = 420,441.84 : x
  2. Step 2: Convert to fraction form
    686,818.44/1,030,162.05 = 420,441.84/x
  3. Step 3: Cross multiply
    686,818.44x = 1,030,162.05 × 420,441.84
  4. Step 4: Simplify right side
    686,818.44x = 433,123,227,800.17
  5. Step 5: Solve for x
    x = 433,123,227,800.17/686,818.44
  6. Step 6: Final answer
    x = 630,622.60

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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.