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Finding the Fourth Proportional to 826,628.80, 1,239,651.60 and 377,564.80

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Solution

The fourth proportional to 826,628.80, 1,239,651.60 and 377,564.80 is: 566,214.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    826,628.80 : 1,239,651.60 = 377,564.80 : x
  2. Step 2: Convert to fraction form
    826,628.80/1,239,651.60 = 377,564.80/x
  3. Step 3: Cross multiply
    826,628.80x = 1,239,651.60 × 377,564.80
  4. Step 4: Simplify right side
    826,628.80x = 468,048,808,423.68
  5. Step 5: Solve for x
    x = 468,048,808,423.68/826,628.80
  6. Step 6: Final answer
    x = 566,214.01

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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.