Home / 786,089.37-1,179,383.28-280,639.50

Finding the Fourth Proportional to 786,089.37, 1,179,383.28 and 280,639.50

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Solution

The fourth proportional to 786,089.37, 1,179,383.28 and 280,639.50 is: 421,048.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,089.37 : 1,179,383.28 = 280,639.50 : x
  2. Step 2: Convert to fraction form
    786,089.37/1,179,383.28 = 280,639.50/x
  3. Step 3: Cross multiply
    786,089.37x = 1,179,383.28 × 280,639.50
  4. Step 4: Simplify right side
    786,089.37x = 330,981,534,007.56
  5. Step 5: Solve for x
    x = 330,981,534,007.56/786,089.37
  6. Step 6: Final answer
    x = 421,048.23

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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.