Home / 912,320.40-1,368,610.20-281,168.40

Finding the Fourth Proportional to 912,320.40, 1,368,610.20 and 281,168.40

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Solution

The fourth proportional to 912,320.40, 1,368,610.20 and 281,168.40 is: 421,792.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,320.40 : 1,368,610.20 = 281,168.40 : x
  2. Step 2: Convert to fraction form
    912,320.40/1,368,610.20 = 281,168.40/x
  3. Step 3: Cross multiply
    912,320.40x = 1,368,610.20 × 281,168.40
  4. Step 4: Simplify right side
    912,320.40x = 384,809,940,157.68
  5. Step 5: Solve for x
    x = 384,809,940,157.68/912,320.40
  6. Step 6: Final answer
    x = 421,792.54

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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.