Home / 1,121,428.17-1,682,060.91-438,186.59

Finding the Fourth Proportional to 1,121,428.17, 1,682,060.91 and 438,186.59

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Solution

The fourth proportional to 1,121,428.17, 1,682,060.91 and 438,186.59 is: 657,248.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,428.17 : 1,682,060.91 = 438,186.59 : x
  2. Step 2: Convert to fraction form
    1,121,428.17/1,682,060.91 = 438,186.59/x
  3. Step 3: Cross multiply
    1,121,428.17x = 1,682,060.91 × 438,186.59
  4. Step 4: Simplify right side
    1,121,428.17x = 737,056,525,914.89
  5. Step 5: Solve for x
    x = 737,056,525,914.89/1,121,428.17
  6. Step 6: Final answer
    x = 657,248.09

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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.