Home / 870,535.20-1,305,014.94-309,438.48

Finding the Fourth Proportional to 870,535.20, 1,305,014.94 and 309,438.48

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Solution

The fourth proportional to 870,535.20, 1,305,014.94 and 309,438.48 is: 463,877.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,535.20 : 1,305,014.94 = 309,438.48 : x
  2. Step 2: Convert to fraction form
    870,535.20/1,305,014.94 = 309,438.48/x
  3. Step 3: Cross multiply
    870,535.20x = 1,305,014.94 × 309,438.48
  4. Step 4: Simplify right side
    870,535.20x = 403,821,839,410.89
  5. Step 5: Solve for x
    x = 403,821,839,410.89/870,535.20
  6. Step 6: Final answer
    x = 463,877.67

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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.