Home / 853,578.81-1,280,338.65-213,888.13

Finding the Fourth Proportional to 853,578.81, 1,280,338.65 and 213,888.13

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Solution

The fourth proportional to 853,578.81, 1,280,338.65 and 213,888.13 is: 320,824.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,578.81 : 1,280,338.65 = 213,888.13 : x
  2. Step 2: Convert to fraction form
    853,578.81/1,280,338.65 = 213,888.13/x
  3. Step 3: Cross multiply
    853,578.81x = 1,280,338.65 × 213,888.13
  4. Step 4: Simplify right side
    853,578.81x = 273,849,236,414.38
  5. Step 5: Solve for x
    x = 273,849,236,414.38/853,578.81
  6. Step 6: Final answer
    x = 320,824.78

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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.