Home / 786,450.20-1,085,290.85-442,286.06

Finding the Fourth Proportional to 786,450.20, 1,085,290.85 and 442,286.06

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Solution

The fourth proportional to 786,450.20, 1,085,290.85 and 442,286.06 is: 610,348.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,450.20 : 1,085,290.85 = 442,286.06 : x
  2. Step 2: Convert to fraction form
    786,450.20/1,085,290.85 = 442,286.06/x
  3. Step 3: Cross multiply
    786,450.20x = 1,085,290.85 × 442,286.06
  4. Step 4: Simplify right side
    786,450.20x = 480,009,009,679.81
  5. Step 5: Solve for x
    x = 480,009,009,679.81/786,450.20
  6. Step 6: Final answer
    x = 610,348.90

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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.