Home / 936,719.36-1,405,080-438,433.28

Finding the Fourth Proportional to 936,719.36, 1,405,080 and 438,433.28

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Solution

The fourth proportional to 936,719.36, 1,405,080 and 438,433.28 is: 657,650.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    936,719.36 : 1,405,080 = 438,433.28 : x
  2. Step 2: Convert to fraction form
    936,719.36/1,405,080 = 438,433.28/x
  3. Step 3: Cross multiply
    936,719.36x = 1,405,080 × 438,433.28
  4. Step 4: Simplify right side
    936,719.36x = 616,033,833,062.40
  5. Step 5: Solve for x
    x = 616,033,833,062.40/936,719.36
  6. Step 6: Final answer
    x = 657,650.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.