Home / 811,269.34-1,217,103.27-278,798.02

Finding the Fourth Proportional to 811,269.34, 1,217,103.27 and 278,798.02

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Solution

The fourth proportional to 811,269.34, 1,217,103.27 and 278,798.02 is: 418,265.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,269.34 : 1,217,103.27 = 278,798.02 : x
  2. Step 2: Convert to fraction form
    811,269.34/1,217,103.27 = 278,798.02/x
  3. Step 3: Cross multiply
    811,269.34x = 1,217,103.27 × 278,798.02
  4. Step 4: Simplify right side
    811,269.34x = 339,325,977,723.28
  5. Step 5: Solve for x
    x = 339,325,977,723.28/811,269.34
  6. Step 6: Final answer
    x = 418,265.50

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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.