Home / 809,312.70-1,214,953.20-409,747.80

Finding the Fourth Proportional to 809,312.70, 1,214,953.20 and 409,747.80

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Solution

The fourth proportional to 809,312.70, 1,214,953.20 and 409,747.80 is: 615,119.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,312.70 : 1,214,953.20 = 409,747.80 : x
  2. Step 2: Convert to fraction form
    809,312.70/1,214,953.20 = 409,747.80/x
  3. Step 3: Cross multiply
    809,312.70x = 1,214,953.20 × 409,747.80
  4. Step 4: Simplify right side
    809,312.70x = 497,824,400,802.96
  5. Step 5: Solve for x
    x = 497,824,400,802.96/809,312.70
  6. Step 6: Final answer
    x = 615,119.97

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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.