Home / 990,907.28-1,368,018.64-652,359.68

Finding the Fourth Proportional to 990,907.28, 1,368,018.64 and 652,359.68

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Solution

The fourth proportional to 990,907.28, 1,368,018.64 and 652,359.68 is: 900,629.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,907.28 : 1,368,018.64 = 652,359.68 : x
  2. Step 2: Convert to fraction form
    990,907.28/1,368,018.64 = 652,359.68/x
  3. Step 3: Cross multiply
    990,907.28x = 1,368,018.64 × 652,359.68
  4. Step 4: Simplify right side
    990,907.28x = 892,440,202,224.44
  5. Step 5: Solve for x
    x = 892,440,202,224.44/990,907.28
  6. Step 6: Final answer
    x = 900,629.37

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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.