Home / 1,263,665.78-1,744,172.15-720,124.05

Finding the Fourth Proportional to 1,263,665.78, 1,744,172.15 and 720,124.05

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Solution

The fourth proportional to 1,263,665.78, 1,744,172.15 and 720,124.05 is: 993,949.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,263,665.78 : 1,744,172.15 = 720,124.05 : x
  2. Step 2: Convert to fraction form
    1,263,665.78/1,744,172.15 = 720,124.05/x
  3. Step 3: Cross multiply
    1,263,665.78x = 1,744,172.15 × 720,124.05
  4. Step 4: Simplify right side
    1,263,665.78x = 1,256,020,312,555.21
  5. Step 5: Solve for x
    x = 1,256,020,312,555.21/1,263,665.78
  6. Step 6: Final answer
    x = 993,949.77

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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.