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Finding the Fourth Proportional to 1,982,681.48, 2,974,086.86 and 943,806.60

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Solution

The fourth proportional to 1,982,681.48, 2,974,086.86 and 943,806.60 is: 1,415,740.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,982,681.48 : 2,974,086.86 = 943,806.60 : x
  2. Step 2: Convert to fraction form
    1,982,681.48/2,974,086.86 = 943,806.60/x
  3. Step 3: Cross multiply
    1,982,681.48x = 2,974,086.86 × 943,806.60
  4. Step 4: Simplify right side
    1,982,681.48x = 2,806,962,802,722.24
  5. Step 5: Solve for x
    x = 2,806,962,802,722.24/1,982,681.48
  6. Step 6: Final answer
    x = 1,415,740.67

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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.