Home / 628,709.51-943,064.58-207,985.38

Finding the Fourth Proportional to 628,709.51, 943,064.58 and 207,985.38

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Solution

The fourth proportional to 628,709.51, 943,064.58 and 207,985.38 is: 311,978.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,709.51 : 943,064.58 = 207,985.38 : x
  2. Step 2: Convert to fraction form
    628,709.51/943,064.58 = 207,985.38/x
  3. Step 3: Cross multiply
    628,709.51x = 943,064.58 × 207,985.38
  4. Step 4: Simplify right side
    628,709.51x = 196,143,645,035.84
  5. Step 5: Solve for x
    x = 196,143,645,035.84/628,709.51
  6. Step 6: Final answer
    x = 311,978.18

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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.