Home / 3,620,756.46-4,996,623.21-1,989,128.70

Finding the Fourth Proportional to 3,620,756.46, 4,996,623.21 and 1,989,128.70

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Solution

The fourth proportional to 3,620,756.46, 4,996,623.21 and 1,989,128.70 is: 2,744,986.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,620,756.46 : 4,996,623.21 = 1,989,128.70 : x
  2. Step 2: Convert to fraction form
    3,620,756.46/4,996,623.21 = 1,989,128.70/x
  3. Step 3: Cross multiply
    3,620,756.46x = 4,996,623.21 × 1,989,128.70
  4. Step 4: Simplify right side
    3,620,756.46x = 9,938,926,630,097.13
  5. Step 5: Solve for x
    x = 9,938,926,630,097.13/3,620,756.46
  6. Step 6: Final answer
    x = 2,744,986.23

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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.