Home / 1,007,138.20-1,389,847.08-554,429.20

Finding the Fourth Proportional to 1,007,138.20, 1,389,847.08 and 554,429.20

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Solution

The fourth proportional to 1,007,138.20, 1,389,847.08 and 554,429.20 is: 765,110.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,007,138.20 : 1,389,847.08 = 554,429.20 : x
  2. Step 2: Convert to fraction form
    1,007,138.20/1,389,847.08 = 554,429.20/x
  3. Step 3: Cross multiply
    1,007,138.20x = 1,389,847.08 × 554,429.20
  4. Step 4: Simplify right side
    1,007,138.20x = 770,571,804,686.74
  5. Step 5: Solve for x
    x = 770,571,804,686.74/1,007,138.20
  6. Step 6: Final answer
    x = 765,110.29

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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.