Home / 2,787,490.90-4,178,412.15-1,889,022.70

Finding the Fourth Proportional to 2,787,490.90, 4,178,412.15 and 1,889,022.70

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Solution

The fourth proportional to 2,787,490.90, 4,178,412.15 and 1,889,022.70 is: 2,831,620.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,787,490.90 : 4,178,412.15 = 1,889,022.70 : x
  2. Step 2: Convert to fraction form
    2,787,490.90/4,178,412.15 = 1,889,022.70/x
  3. Step 3: Cross multiply
    2,787,490.90x = 4,178,412.15 × 1,889,022.70
  4. Step 4: Simplify right side
    2,787,490.90x = 7,893,115,401,305.81
  5. Step 5: Solve for x
    x = 7,893,115,401,305.81/2,787,490.90
  6. Step 6: Final answer
    x = 2,831,620.15

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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.