Home / 811,458.02-1,217,214.75-278,974.46

Finding the Fourth Proportional to 811,458.02, 1,217,214.75 and 278,974.46

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Solution

The fourth proportional to 811,458.02, 1,217,214.75 and 278,974.46 is: 418,471.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,458.02 : 1,217,214.75 = 278,974.46 : x
  2. Step 2: Convert to fraction form
    811,458.02/1,217,214.75 = 278,974.46/x
  3. Step 3: Cross multiply
    811,458.02x = 1,217,214.75 × 278,974.46
  4. Step 4: Simplify right side
    811,458.02x = 339,571,827,585.29
  5. Step 5: Solve for x
    x = 339,571,827,585.29/811,458.02
  6. Step 6: Final answer
    x = 418,471.22

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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.