Home / 902,865.20-1,245,920.58-489,393.12

Finding the Fourth Proportional to 902,865.20, 1,245,920.58 and 489,393.12

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Solution

The fourth proportional to 902,865.20, 1,245,920.58 and 489,393.12 is: 675,344.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    902,865.20 : 1,245,920.58 = 489,393.12 : x
  2. Step 2: Convert to fraction form
    902,865.20/1,245,920.58 = 489,393.12/x
  3. Step 3: Cross multiply
    902,865.20x = 1,245,920.58 × 489,393.12
  4. Step 4: Simplify right side
    902,865.20x = 609,744,959,918.41
  5. Step 5: Solve for x
    x = 609,744,959,918.41/902,865.20
  6. Step 6: Final answer
    x = 675,344.40

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1.5x scale

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.