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Finding the Fourth Proportional to 1,325,412, 1,988,118.04 and 328,140

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Solution

The fourth proportional to 1,325,412, 1,988,118.04 and 328,140 is: 492,210.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,325,412 : 1,988,118.04 = 328,140 : x
  2. Step 2: Convert to fraction form
    1,325,412/1,988,118.04 = 328,140/x
  3. Step 3: Cross multiply
    1,325,412x = 1,988,118.04 × 328,140
  4. Step 4: Simplify right side
    1,325,412x = 652,381,053,645.60
  5. Step 5: Solve for x
    x = 652,381,053,645.60/1,325,412
  6. Step 6: Final answer
    x = 492,210.01

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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.