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Finding the Fourth Proportional to 1,260,048, 1,890,072 and 326,160

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Solution

The fourth proportional to 1,260,048, 1,890,072 and 326,160 is: 489,240

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,260,048 : 1,890,072 = 326,160 : x
  2. Step 2: Convert to fraction form
    1,260,048/1,890,072 = 326,160/x
  3. Step 3: Cross multiply
    1,260,048x = 1,890,072 × 326,160
  4. Step 4: Simplify right side
    1,260,048x = 616,465,883,520
  5. Step 5: Solve for x
    x = 616,465,883,520/1,260,048
  6. Step 6: Final answer
    x = 489,240

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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.