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Finding the Fourth Proportional to 1,672,913.20, 2,506,599.60 and 961,700.80

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Solution

The fourth proportional to 1,672,913.20, 2,506,599.60 and 961,700.80 is: 1,440,958.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,672,913.20 : 2,506,599.60 = 961,700.80 : x
  2. Step 2: Convert to fraction form
    1,672,913.20/2,506,599.60 = 961,700.80/x
  3. Step 3: Cross multiply
    1,672,913.20x = 2,506,599.60 × 961,700.80
  4. Step 4: Simplify right side
    1,672,913.20x = 2,410,598,840,599.68
  5. Step 5: Solve for x
    x = 2,410,598,840,599.68/1,672,913.20
  6. Step 6: Final answer
    x = 1,440,958.71

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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.