Home / 527,514.42-727,970.31-309,680.46

Finding the Fourth Proportional to 527,514.42, 727,970.31 and 309,680.46

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Solution

The fourth proportional to 527,514.42, 727,970.31 and 309,680.46 is: 427,359.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,514.42 : 727,970.31 = 309,680.46 : x
  2. Step 2: Convert to fraction form
    527,514.42/727,970.31 = 309,680.46/x
  3. Step 3: Cross multiply
    527,514.42x = 727,970.31 × 309,680.46
  4. Step 4: Simplify right side
    527,514.42x = 225,438,180,467.14
  5. Step 5: Solve for x
    x = 225,438,180,467.14/527,514.42
  6. Step 6: Final answer
    x = 427,359.28

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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.