Home / 811,308.25-1,216,703.58-278,700.85

Finding the Fourth Proportional to 811,308.25, 1,216,703.58 and 278,700.85

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Solution

The fourth proportional to 811,308.25, 1,216,703.58 and 278,700.85 is: 417,962.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,308.25 : 1,216,703.58 = 278,700.85 : x
  2. Step 2: Convert to fraction form
    811,308.25/1,216,703.58 = 278,700.85/x
  3. Step 3: Cross multiply
    811,308.25x = 1,216,703.58 × 278,700.85
  4. Step 4: Simplify right side
    811,308.25x = 339,096,321,944.04
  5. Step 5: Solve for x
    x = 339,096,321,944.04/811,308.25
  6. Step 6: Final answer
    x = 417,962.37

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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.