Home / 643,082.27-887,488.97-356,596.20

Finding the Fourth Proportional to 643,082.27, 887,488.97 and 356,596.20

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Solution

The fourth proportional to 643,082.27, 887,488.97 and 356,596.20 is: 492,122.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,082.27 : 887,488.97 = 356,596.20 : x
  2. Step 2: Convert to fraction form
    643,082.27/887,488.97 = 356,596.20/x
  3. Step 3: Cross multiply
    643,082.27x = 887,488.97 × 356,596.20
  4. Step 4: Simplify right side
    643,082.27x = 316,475,192,460.93
  5. Step 5: Solve for x
    x = 316,475,192,460.93/643,082.27
  6. Step 6: Final answer
    x = 492,122.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.