Home / 861,063.46-1,290,895.34-300,491.62

Finding the Fourth Proportional to 861,063.46, 1,290,895.34 and 300,491.62

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Solution

The fourth proportional to 861,063.46, 1,290,895.34 and 300,491.62 is: 450,493.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,063.46 : 1,290,895.34 = 300,491.62 : x
  2. Step 2: Convert to fraction form
    861,063.46/1,290,895.34 = 300,491.62/x
  3. Step 3: Cross multiply
    861,063.46x = 1,290,895.34 × 300,491.62
  4. Step 4: Simplify right side
    861,063.46x = 387,903,231,967.05
  5. Step 5: Solve for x
    x = 387,903,231,967.05/861,063.46
  6. Step 6: Final answer
    x = 450,493.20

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Double scale
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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.