Home / 811,235.30-1,215,994.88-305,577.48

Finding the Fourth Proportional to 811,235.30, 1,215,994.88 and 305,577.48

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Solution

The fourth proportional to 811,235.30, 1,215,994.88 and 305,577.48 is: 458,043.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,235.30 : 1,215,994.88 = 305,577.48 : x
  2. Step 2: Convert to fraction form
    811,235.30/1,215,994.88 = 305,577.48/x
  3. Step 3: Cross multiply
    811,235.30x = 1,215,994.88 × 305,577.48
  4. Step 4: Simplify right side
    811,235.30x = 371,580,649,595.42
  5. Step 5: Solve for x
    x = 371,580,649,595.42/811,235.30
  6. Step 6: Final answer
    x = 458,043.00

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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.