Home / 685,293,164.80-1,027,939,718.40-200,618,970.88

Finding the Fourth Proportional to 685,293,164.80, 1,027,939,718.40 and 200,618,970.88

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Solution

The fourth proportional to 685,293,164.80, 1,027,939,718.40 and 200,618,970.88 is: 300,928,447.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,293,164.80 : 1,027,939,718.40 = 200,618,970.88 : x
  2. Step 2: Convert to fraction form
    685,293,164.80/1,027,939,718.40 = 200,618,970.88/x
  3. Step 3: Cross multiply
    685,293,164.80x = 1,027,939,718.40 × 200,618,970.88
  4. Step 4: Simplify right side
    685,293,164.80x = 206,224,208,432,084,992
  5. Step 5: Solve for x
    x = 206,224,208,432,084,992/685,293,164.80
  6. Step 6: Final answer
    x = 300,928,447.89

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1.5x scale

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.