Home / 827,630.64-1,141,128.36-643,922.64

Finding the Fourth Proportional to 827,630.64, 1,141,128.36 and 643,922.64

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Solution

The fourth proportional to 827,630.64, 1,141,128.36 and 643,922.64 is: 887,833.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    827,630.64 : 1,141,128.36 = 643,922.64 : x
  2. Step 2: Convert to fraction form
    827,630.64/1,141,128.36 = 643,922.64/x
  3. Step 3: Cross multiply
    827,630.64x = 1,141,128.36 × 643,922.64
  4. Step 4: Simplify right side
    827,630.64x = 734,798,386,150.07
  5. Step 5: Solve for x
    x = 734,798,386,150.07/827,630.64
  6. Step 6: Final answer
    x = 887,833.72

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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.