Home / 1,190,513.78-1,642,921.40-646,660.16

Finding the Fourth Proportional to 1,190,513.78, 1,642,921.40 and 646,660.16

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Solution

The fourth proportional to 1,190,513.78, 1,642,921.40 and 646,660.16 is: 892,397.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,190,513.78 : 1,642,921.40 = 646,660.16 : x
  2. Step 2: Convert to fraction form
    1,190,513.78/1,642,921.40 = 646,660.16/x
  3. Step 3: Cross multiply
    1,190,513.78x = 1,642,921.40 × 646,660.16
  4. Step 4: Simplify right side
    1,190,513.78x = 1,062,411,815,391.42
  5. Step 5: Solve for x
    x = 1,062,411,815,391.42/1,190,513.78
  6. Step 6: Final answer
    x = 892,397.75

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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.