Home / 811,349.20-1,217,023.80-278,822.80

Finding the Fourth Proportional to 811,349.20, 1,217,023.80 and 278,822.80

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Solution

The fourth proportional to 811,349.20, 1,217,023.80 and 278,822.80 is: 418,234.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,349.20 : 1,217,023.80 = 278,822.80 : x
  2. Step 2: Convert to fraction form
    811,349.20/1,217,023.80 = 278,822.80/x
  3. Step 3: Cross multiply
    811,349.20x = 1,217,023.80 × 278,822.80
  4. Step 4: Simplify right side
    811,349.20x = 339,333,983,582.64
  5. Step 5: Solve for x
    x = 339,333,983,582.64/811,349.20
  6. Step 6: Final answer
    x = 418,234.20

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1.5x scale

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.