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Finding the Fourth Proportional to 2,657,611.68, 3,986,942.76 and 974,729.76

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Solution

The fourth proportional to 2,657,611.68, 3,986,942.76 and 974,729.76 is: 1,462,287.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,657,611.68 : 3,986,942.76 = 974,729.76 : x
  2. Step 2: Convert to fraction form
    2,657,611.68/3,986,942.76 = 974,729.76/x
  3. Step 3: Cross multiply
    2,657,611.68x = 3,986,942.76 × 974,729.76
  4. Step 4: Simplify right side
    2,657,611.68x = 3,886,191,759,588.54
  5. Step 5: Solve for x
    x = 3,886,191,759,588.54/2,657,611.68
  6. Step 6: Final answer
    x = 1,462,287.28

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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.