Home / 669,597.72-1,004,139.51-285,102.78

Finding the Fourth Proportional to 669,597.72, 1,004,139.51 and 285,102.78

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Solution

The fourth proportional to 669,597.72, 1,004,139.51 and 285,102.78 is: 427,544.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,597.72 : 1,004,139.51 = 285,102.78 : x
  2. Step 2: Convert to fraction form
    669,597.72/1,004,139.51 = 285,102.78/x
  3. Step 3: Cross multiply
    669,597.72x = 1,004,139.51 × 285,102.78
  4. Step 4: Simplify right side
    669,597.72x = 286,282,965,808.84
  5. Step 5: Solve for x
    x = 286,282,965,808.84/669,597.72
  6. Step 6: Final answer
    x = 427,544.71

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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.