Home / 445,558.20-668,337.30-429,811.80

Finding the Fourth Proportional to 445,558.20, 668,337.30 and 429,811.80

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Solution

The fourth proportional to 445,558.20, 668,337.30 and 429,811.80 is: 644,717.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,558.20 : 668,337.30 = 429,811.80 : x
  2. Step 2: Convert to fraction form
    445,558.20/668,337.30 = 429,811.80/x
  3. Step 3: Cross multiply
    445,558.20x = 668,337.30 × 429,811.80
  4. Step 4: Simplify right side
    445,558.20x = 287,259,257,920.14
  5. Step 5: Solve for x
    x = 287,259,257,920.14/445,558.20
  6. Step 6: Final answer
    x = 644,717.70

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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.