Home / 1,325,419-1,988,128.50-328,147

Finding the Fourth Proportional to 1,325,419, 1,988,128.50 and 328,147

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Solution

The fourth proportional to 1,325,419, 1,988,128.50 and 328,147 is: 492,220.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,325,419 : 1,988,128.50 = 328,147 : x
  2. Step 2: Convert to fraction form
    1,325,419/1,988,128.50 = 328,147/x
  3. Step 3: Cross multiply
    1,325,419x = 1,988,128.50 × 328,147
  4. Step 4: Simplify right side
    1,325,419x = 652,398,402,889.50
  5. Step 5: Solve for x
    x = 652,398,402,889.50/1,325,419
  6. Step 6: Final answer
    x = 492,220.50

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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.