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Finding the Fourth Proportional to 506,679.81, 699,121.02 and 288,884.37

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Solution

The fourth proportional to 506,679.81, 699,121.02 and 288,884.37 is: 398,605.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    506,679.81 : 699,121.02 = 288,884.37 : x
  2. Step 2: Convert to fraction form
    506,679.81/699,121.02 = 288,884.37/x
  3. Step 3: Cross multiply
    506,679.81x = 699,121.02 × 288,884.37
  4. Step 4: Simplify right side
    506,679.81x = 201,965,139,121.48
  5. Step 5: Solve for x
    x = 201,965,139,121.48/506,679.81
  6. Step 6: Final answer
    x = 398,605.07

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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.