Home / 2,118,742.20-2,923,875.90-1,247,614.74

Finding the Fourth Proportional to 2,118,742.20, 2,923,875.90 and 1,247,614.74

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Solution

The fourth proportional to 2,118,742.20, 2,923,875.90 and 1,247,614.74 is: 1,721,715.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,118,742.20 : 2,923,875.90 = 1,247,614.74 : x
  2. Step 2: Convert to fraction form
    2,118,742.20/2,923,875.90 = 1,247,614.74/x
  3. Step 3: Cross multiply
    2,118,742.20x = 2,923,875.90 × 1,247,614.74
  4. Step 4: Simplify right side
    2,118,742.20x = 3,647,870,670,770.77
  5. Step 5: Solve for x
    x = 3,647,870,670,770.77/2,118,742.20
  6. Step 6: Final answer
    x = 1,721,715.21

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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.