Home / 912,850.40-1,369,405.20-281,698.40

Finding the Fourth Proportional to 912,850.40, 1,369,405.20 and 281,698.40

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Solution

The fourth proportional to 912,850.40, 1,369,405.20 and 281,698.40 is: 422,587.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,850.40 : 1,369,405.20 = 281,698.40 : x
  2. Step 2: Convert to fraction form
    912,850.40/1,369,405.20 = 281,698.40/x
  3. Step 3: Cross multiply
    912,850.40x = 1,369,405.20 × 281,698.40
  4. Step 4: Simplify right side
    912,850.40x = 385,759,253,791.68
  5. Step 5: Solve for x
    x = 385,759,253,791.68/912,850.40
  6. Step 6: Final answer
    x = 422,587.59

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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.