Home / 1,370,145.45-1,890,786.80-758,299.40

Finding the Fourth Proportional to 1,370,145.45, 1,890,786.80 and 758,299.40

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Solution

The fourth proportional to 1,370,145.45, 1,890,786.80 and 758,299.40 is: 1,046,445.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,370,145.45 : 1,890,786.80 = 758,299.40 : x
  2. Step 2: Convert to fraction form
    1,370,145.45/1,890,786.80 = 758,299.40/x
  3. Step 3: Cross multiply
    1,370,145.45x = 1,890,786.80 × 758,299.40
  4. Step 4: Simplify right side
    1,370,145.45x = 1,433,782,489,812.94
  5. Step 5: Solve for x
    x = 1,433,782,489,812.94/1,370,145.45
  6. Step 6: Final answer
    x = 1,046,445.46

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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.