Home / 939,328.31-1,409,221.96-299,632.16

Finding the Fourth Proportional to 939,328.31, 1,409,221.96 and 299,632.16

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Solution

The fourth proportional to 939,328.31, 1,409,221.96 and 299,632.16 is: 449,521.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,328.31 : 1,409,221.96 = 299,632.16 : x
  2. Step 2: Convert to fraction form
    939,328.31/1,409,221.96 = 299,632.16/x
  3. Step 3: Cross multiply
    939,328.31x = 1,409,221.96 × 299,632.16
  4. Step 4: Simplify right side
    939,328.31x = 422,248,215,757.29
  5. Step 5: Solve for x
    x = 422,248,215,757.29/939,328.31
  6. Step 6: Final answer
    x = 449,521.44

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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.