Home / 800,020.10-1,200,031.30-326,705.46

Finding the Fourth Proportional to 800,020.10, 1,200,031.30 and 326,705.46

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Solution

The fourth proportional to 800,020.10, 1,200,031.30 and 326,705.46 is: 490,058.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    800,020.10 : 1,200,031.30 = 326,705.46 : x
  2. Step 2: Convert to fraction form
    800,020.10/1,200,031.30 = 326,705.46/x
  3. Step 3: Cross multiply
    800,020.10x = 1,200,031.30 × 326,705.46
  4. Step 4: Simplify right side
    800,020.10x = 392,056,771,880.74
  5. Step 5: Solve for x
    x = 392,056,771,880.74/800,020.10
  6. Step 6: Final answer
    x = 490,058.65

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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.