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Finding the Fourth Proportional to 1,786,981.76, 2,466,053.88 and 971,185.49

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Solution

The fourth proportional to 1,786,981.76, 2,466,053.88 and 971,185.49 is: 1,340,246.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,786,981.76 : 2,466,053.88 = 971,185.49 : x
  2. Step 2: Convert to fraction form
    1,786,981.76/2,466,053.88 = 971,185.49/x
  3. Step 3: Cross multiply
    1,786,981.76x = 2,466,053.88 × 971,185.49
  4. Step 4: Simplify right side
    1,786,981.76x = 2,394,995,732,153.91
  5. Step 5: Solve for x
    x = 2,394,995,732,153.91/1,786,981.76
  6. Step 6: Final answer
    x = 1,340,246.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.