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Finding the Fourth Proportional to 1,038,362.80, 1,554,919.80 and 828,410.80

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Solution

The fourth proportional to 1,038,362.80, 1,554,919.80 and 828,410.80 is: 1,240,522.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,038,362.80 : 1,554,919.80 = 828,410.80 : x
  2. Step 2: Convert to fraction form
    1,038,362.80/1,554,919.80 = 828,410.80/x
  3. Step 3: Cross multiply
    1,038,362.80x = 1,554,919.80 × 828,410.80
  4. Step 4: Simplify right side
    1,038,362.80x = 1,288,112,355,453.84
  5. Step 5: Solve for x
    x = 1,288,112,355,453.84/1,038,362.80
  6. Step 6: Final answer
    x = 1,240,522.44

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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.