Home / 1,138,758.40-1,571,419.04-629,430.40

Finding the Fourth Proportional to 1,138,758.40, 1,571,419.04 and 629,430.40

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Solution

The fourth proportional to 1,138,758.40, 1,571,419.04 and 629,430.40 is: 868,576.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,138,758.40 : 1,571,419.04 = 629,430.40 : x
  2. Step 2: Convert to fraction form
    1,138,758.40/1,571,419.04 = 629,430.40/x
  3. Step 3: Cross multiply
    1,138,758.40x = 1,571,419.04 × 629,430.40
  4. Step 4: Simplify right side
    1,138,758.40x = 989,098,914,914.82
  5. Step 5: Solve for x
    x = 989,098,914,914.82/1,138,758.40
  6. Step 6: Final answer
    x = 868,576.61

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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.