Home / 644,264.96-888,942.40-389,610.88

Finding the Fourth Proportional to 644,264.96, 888,942.40 and 389,610.88

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Solution

The fourth proportional to 644,264.96, 888,942.40 and 389,610.88 is: 537,576.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,264.96 : 888,942.40 = 389,610.88 : x
  2. Step 2: Convert to fraction form
    644,264.96/888,942.40 = 389,610.88/x
  3. Step 3: Cross multiply
    644,264.96x = 888,942.40 × 389,610.88
  4. Step 4: Simplify right side
    644,264.96x = 346,341,630,733.31
  5. Step 5: Solve for x
    x = 346,341,630,733.31/644,264.96
  6. Step 6: Final answer
    x = 537,576.39

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.