Home / 1,138,003.74-1,570,669.32-678,888.51

Finding the Fourth Proportional to 1,138,003.74, 1,570,669.32 and 678,888.51

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Solution

The fourth proportional to 1,138,003.74, 1,570,669.32 and 678,888.51 is: 936,999.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,138,003.74 : 1,570,669.32 = 678,888.51 : x
  2. Step 2: Convert to fraction form
    1,138,003.74/1,570,669.32 = 678,888.51/x
  3. Step 3: Cross multiply
    1,138,003.74x = 1,570,669.32 × 678,888.51
  4. Step 4: Simplify right side
    1,138,003.74x = 1,066,309,354,357.51
  5. Step 5: Solve for x
    x = 1,066,309,354,357.51/1,138,003.74
  6. Step 6: Final answer
    x = 936,999.87

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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.