Home / 644,967.38-890,049.74-350,615.21

Finding the Fourth Proportional to 644,967.38, 890,049.74 and 350,615.21

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Solution

The fourth proportional to 644,967.38, 890,049.74 and 350,615.21 is: 483,846.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,967.38 : 890,049.74 = 350,615.21 : x
  2. Step 2: Convert to fraction form
    644,967.38/890,049.74 = 350,615.21/x
  3. Step 3: Cross multiply
    644,967.38x = 890,049.74 × 350,615.21
  4. Step 4: Simplify right side
    644,967.38x = 312,064,970,297.22
  5. Step 5: Solve for x
    x = 312,064,970,297.22/644,967.38
  6. Step 6: Final answer
    x = 483,846.13

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1.5x scale

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.