Home / 790,820.91-1,185,986.12-285,316.20

Finding the Fourth Proportional to 790,820.91, 1,185,986.12 and 285,316.20

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Solution

The fourth proportional to 790,820.91, 1,185,986.12 and 285,316.20 is: 427,885.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,820.91 : 1,185,986.12 = 285,316.20 : x
  2. Step 2: Convert to fraction form
    790,820.91/1,185,986.12 = 285,316.20/x
  3. Step 3: Cross multiply
    790,820.91x = 1,185,986.12 × 285,316.20
  4. Step 4: Simplify right side
    790,820.91x = 338,381,051,584.56
  5. Step 5: Solve for x
    x = 338,381,051,584.56/790,820.91
  6. Step 6: Final answer
    x = 427,885.82

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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.