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Finding the Fourth Proportional to 1,079,574, 1,619,361 and 331,620

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Solution

The fourth proportional to 1,079,574, 1,619,361 and 331,620 is: 497,430

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,079,574 : 1,619,361 = 331,620 : x
  2. Step 2: Convert to fraction form
    1,079,574/1,619,361 = 331,620/x
  3. Step 3: Cross multiply
    1,079,574x = 1,619,361 × 331,620
  4. Step 4: Simplify right side
    1,079,574x = 537,012,494,820
  5. Step 5: Solve for x
    x = 537,012,494,820/1,079,574
  6. Step 6: Final answer
    x = 497,430

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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.