Home / 912,150.40-1,368,355.20-280,998.40

Finding the Fourth Proportional to 912,150.40, 1,368,355.20 and 280,998.40

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Solution

The fourth proportional to 912,150.40, 1,368,355.20 and 280,998.40 is: 421,537.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,150.40 : 1,368,355.20 = 280,998.40 : x
  2. Step 2: Convert to fraction form
    912,150.40/1,368,355.20 = 280,998.40/x
  3. Step 3: Cross multiply
    912,150.40x = 1,368,355.20 × 280,998.40
  4. Step 4: Simplify right side
    912,150.40x = 384,505,621,831.68
  5. Step 5: Solve for x
    x = 384,505,621,831.68/912,150.40
  6. Step 6: Final answer
    x = 421,537.52

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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.