Home / 820,031.20-1,229,609.40-346,181.20

Finding the Fourth Proportional to 820,031.20, 1,229,609.40 and 346,181.20

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Solution

The fourth proportional to 820,031.20, 1,229,609.40 and 346,181.20 is: 519,087.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,031.20 : 1,229,609.40 = 346,181.20 : x
  2. Step 2: Convert to fraction form
    820,031.20/1,229,609.40 = 346,181.20/x
  3. Step 3: Cross multiply
    820,031.20x = 1,229,609.40 × 346,181.20
  4. Step 4: Simplify right side
    820,031.20x = 425,667,657,623.28
  5. Step 5: Solve for x
    x = 425,667,657,623.28/820,031.20
  6. Step 6: Final answer
    x = 519,087.15

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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.