Home / 1,138,969-1,571,810.03-629,704.18

Finding the Fourth Proportional to 1,138,969, 1,571,810.03 and 629,704.18

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Solution

The fourth proportional to 1,138,969, 1,571,810.03 and 629,704.18 is: 869,009.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,138,969 : 1,571,810.03 = 629,704.18 : x
  2. Step 2: Convert to fraction form
    1,138,969/1,571,810.03 = 629,704.18/x
  3. Step 3: Cross multiply
    1,138,969x = 1,571,810.03 × 629,704.18
  4. Step 4: Simplify right side
    1,138,969x = 989,775,346,056.93
  5. Step 5: Solve for x
    x = 989,775,346,056.93/1,138,969
  6. Step 6: Final answer
    x = 869,009.91

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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.