Home / 921,829.20-1,382,743.80-543,915.60

Finding the Fourth Proportional to 921,829.20, 1,382,743.80 and 543,915.60

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Solution

The fourth proportional to 921,829.20, 1,382,743.80 and 543,915.60 is: 815,873.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,829.20 : 1,382,743.80 = 543,915.60 : x
  2. Step 2: Convert to fraction form
    921,829.20/1,382,743.80 = 543,915.60/x
  3. Step 3: Cross multiply
    921,829.20x = 1,382,743.80 × 543,915.60
  4. Step 4: Simplify right side
    921,829.20x = 752,095,923,623.28
  5. Step 5: Solve for x
    x = 752,095,923,623.28/921,829.20
  6. Step 6: Final answer
    x = 815,873.40

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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.