Home / 1,292,100.21-1,938,203.75-381,282.69

Finding the Fourth Proportional to 1,292,100.21, 1,938,203.75 and 381,282.69

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Solution

The fourth proportional to 1,292,100.21, 1,938,203.75 and 381,282.69 is: 571,939.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,292,100.21 : 1,938,203.75 = 381,282.69 : x
  2. Step 2: Convert to fraction form
    1,292,100.21/1,938,203.75 = 381,282.69/x
  3. Step 3: Cross multiply
    1,292,100.21x = 1,938,203.75 × 381,282.69
  4. Step 4: Simplify right side
    1,292,100.21x = 739,003,529,877.07
  5. Step 5: Solve for x
    x = 739,003,529,877.07/1,292,100.21
  6. Step 6: Final answer
    x = 571,939.80

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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.