Home / 1,128,131.08-1,556,569.12-669,012.40

Finding the Fourth Proportional to 1,128,131.08, 1,556,569.12 and 669,012.40

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Solution

The fourth proportional to 1,128,131.08, 1,556,569.12 and 669,012.40 is: 923,087.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,128,131.08 : 1,556,569.12 = 669,012.40 : x
  2. Step 2: Convert to fraction form
    1,128,131.08/1,556,569.12 = 669,012.40/x
  3. Step 3: Cross multiply
    1,128,131.08x = 1,556,569.12 × 669,012.40
  4. Step 4: Simplify right side
    1,128,131.08x = 1,041,364,042,737.09
  5. Step 5: Solve for x
    x = 1,041,364,042,737.09/1,128,131.08
  6. Step 6: Final answer
    x = 923,087.81

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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.