Home / 430,927.20-646,418.88-351,871.20

Finding the Fourth Proportional to 430,927.20, 646,418.88 and 351,871.20

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Solution

The fourth proportional to 430,927.20, 646,418.88 and 351,871.20 is: 527,829.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,927.20 : 646,418.88 = 351,871.20 : x
  2. Step 2: Convert to fraction form
    430,927.20/646,418.88 = 351,871.20/x
  3. Step 3: Cross multiply
    430,927.20x = 646,418.88 × 351,871.20
  4. Step 4: Simplify right side
    430,927.20x = 227,456,187,008.26
  5. Step 5: Solve for x
    x = 227,456,187,008.26/430,927.20
  6. Step 6: Final answer
    x = 527,829.73

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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.