Home / 639,962.16-960,467.94-324,509.28

Finding the Fourth Proportional to 639,962.16, 960,467.94 and 324,509.28

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Solution

The fourth proportional to 639,962.16, 960,467.94 and 324,509.28 is: 487,029.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,962.16 : 960,467.94 = 324,509.28 : x
  2. Step 2: Convert to fraction form
    639,962.16/960,467.94 = 324,509.28/x
  3. Step 3: Cross multiply
    639,962.16x = 960,467.94 × 324,509.28
  4. Step 4: Simplify right side
    639,962.16x = 311,680,759,672.48
  5. Step 5: Solve for x
    x = 311,680,759,672.48/639,962.16
  6. Step 6: Final answer
    x = 487,029.98

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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.