Home / 1,328,809.30-1,993,531.40-430,252

Finding the Fourth Proportional to 1,328,809.30, 1,993,531.40 and 430,252

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Solution

The fourth proportional to 1,328,809.30, 1,993,531.40 and 430,252 is: 645,480.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,809.30 : 1,993,531.40 = 430,252 : x
  2. Step 2: Convert to fraction form
    1,328,809.30/1,993,531.40 = 430,252/x
  3. Step 3: Cross multiply
    1,328,809.30x = 1,993,531.40 × 430,252
  4. Step 4: Simplify right side
    1,328,809.30x = 857,720,869,761.54
  5. Step 5: Solve for x
    x = 857,720,869,761.54/1,328,809.30
  6. Step 6: Final answer
    x = 645,480.78

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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.