Home / 869,189.45-1,199,477.67-487,216.23

Finding the Fourth Proportional to 869,189.45, 1,199,477.67 and 487,216.23

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Solution

The fourth proportional to 869,189.45, 1,199,477.67 and 487,216.23 is: 672,356.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,189.45 : 1,199,477.67 = 487,216.23 : x
  2. Step 2: Convert to fraction form
    869,189.45/1,199,477.67 = 487,216.23/x
  3. Step 3: Cross multiply
    869,189.45x = 1,199,477.67 × 487,216.23
  4. Step 4: Simplify right side
    869,189.45x = 584,404,988,768.54
  5. Step 5: Solve for x
    x = 584,404,988,768.54/869,189.45
  6. Step 6: Final answer
    x = 672,356.28

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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.