Home / 854,628.12-1,281,038.22-321,918.66

Finding the Fourth Proportional to 854,628.12, 1,281,038.22 and 321,918.66

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Solution

The fourth proportional to 854,628.12, 1,281,038.22 and 321,918.66 is: 482,537.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    854,628.12 : 1,281,038.22 = 321,918.66 : x
  2. Step 2: Convert to fraction form
    854,628.12/1,281,038.22 = 321,918.66/x
  3. Step 3: Cross multiply
    854,628.12x = 1,281,038.22 × 321,918.66
  4. Step 4: Simplify right side
    854,628.12x = 412,390,107,191.19
  5. Step 5: Solve for x
    x = 412,390,107,191.19/854,628.12
  6. Step 6: Final answer
    x = 482,537.49

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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.