Home / 989,555.78-1,364,743.07-760,667.60

Finding the Fourth Proportional to 989,555.78, 1,364,743.07 and 760,667.60

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Solution

The fourth proportional to 989,555.78, 1,364,743.07 and 760,667.60 is: 1,049,072.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,555.78 : 1,364,743.07 = 760,667.60 : x
  2. Step 2: Convert to fraction form
    989,555.78/1,364,743.07 = 760,667.60/x
  3. Step 3: Cross multiply
    989,555.78x = 1,364,743.07 × 760,667.60
  4. Step 4: Simplify right side
    989,555.78x = 1,038,115,825,046.48
  5. Step 5: Solve for x
    x = 1,038,115,825,046.48/989,555.78
  6. Step 6: Final answer
    x = 1,049,072.58

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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.