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Finding the Fourth Proportional to 2,657,561.86, 3,986,867.40 and 974,679.94

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Solution

The fourth proportional to 2,657,561.86, 3,986,867.40 and 974,679.94 is: 1,462,212.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,657,561.86 : 3,986,867.40 = 974,679.94 : x
  2. Step 2: Convert to fraction form
    2,657,561.86/3,986,867.40 = 974,679.94/x
  3. Step 3: Cross multiply
    2,657,561.86x = 3,986,867.40 × 974,679.94
  4. Step 4: Simplify right side
    2,657,561.86x = 3,885,919,678,219.96
  5. Step 5: Solve for x
    x = 3,885,919,678,219.96/2,657,561.86
  6. Step 6: Final answer
    x = 1,462,212.31

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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.