Home / 812,792.32-1,121,678.71-450,249.91

Finding the Fourth Proportional to 812,792.32, 1,121,678.71 and 450,249.91

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Solution

The fourth proportional to 812,792.32, 1,121,678.71 and 450,249.91 is: 621,358.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,792.32 : 1,121,678.71 = 450,249.91 : x
  2. Step 2: Convert to fraction form
    812,792.32/1,121,678.71 = 450,249.91/x
  3. Step 3: Cross multiply
    812,792.32x = 1,121,678.71 × 450,249.91
  4. Step 4: Simplify right side
    812,792.32x = 505,035,738,226.42
  5. Step 5: Solve for x
    x = 505,035,738,226.42/812,792.32
  6. Step 6: Final answer
    x = 621,358.90

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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.