Home / 668,903.15-1,003,507.97-289,887.45

Finding the Fourth Proportional to 668,903.15, 1,003,507.97 and 289,887.45

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Solution

The fourth proportional to 668,903.15, 1,003,507.97 and 289,887.45 is: 434,897.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,903.15 : 1,003,507.97 = 289,887.45 : x
  2. Step 2: Convert to fraction form
    668,903.15/1,003,507.97 = 289,887.45/x
  3. Step 3: Cross multiply
    668,903.15x = 1,003,507.97 × 289,887.45
  4. Step 4: Simplify right side
    668,903.15x = 290,904,365,028.54
  5. Step 5: Solve for x
    x = 290,904,365,028.54/668,903.15
  6. Step 6: Final answer
    x = 434,897.59

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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.