Home / 854,669.88-1,280,041.92-426,892.68

Finding the Fourth Proportional to 854,669.88, 1,280,041.92 and 426,892.68

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Solution

The fourth proportional to 854,669.88, 1,280,041.92 and 426,892.68 is: 639,358.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    854,669.88 : 1,280,041.92 = 426,892.68 : x
  2. Step 2: Convert to fraction form
    854,669.88/1,280,041.92 = 426,892.68/x
  3. Step 3: Cross multiply
    854,669.88x = 1,280,041.92 × 426,892.68
  4. Step 4: Simplify right side
    854,669.88x = 546,440,525,741.15
  5. Step 5: Solve for x
    x = 546,440,525,741.15/854,669.88
  6. Step 6: Final answer
    x = 639,358.59

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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.