Home / 640,619.16-960,611.76-214,008.63

Finding the Fourth Proportional to 640,619.16, 960,611.76 and 214,008.63

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Solution

The fourth proportional to 640,619.16, 960,611.76 and 214,008.63 is: 320,907.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,619.16 : 960,611.76 = 214,008.63 : x
  2. Step 2: Convert to fraction form
    640,619.16/960,611.76 = 214,008.63/x
  3. Step 3: Cross multiply
    640,619.16x = 960,611.76 × 214,008.63
  4. Step 4: Simplify right side
    640,619.16x = 205,579,206,719.49
  5. Step 5: Solve for x
    x = 205,579,206,719.49/640,619.16
  6. Step 6: Final answer
    x = 320,907.05

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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.