Home / 8,505,999.60-12,758,999.40-7,761,982.20

Finding the Fourth Proportional to 8,505,999.60, 12,758,999.40 and 7,761,982.20

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Solution

The fourth proportional to 8,505,999.60, 12,758,999.40 and 7,761,982.20 is: 11,642,973.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,505,999.60 : 12,758,999.40 = 7,761,982.20 : x
  2. Step 2: Convert to fraction form
    8,505,999.60/12,758,999.40 = 7,761,982.20/x
  3. Step 3: Cross multiply
    8,505,999.60x = 12,758,999.40 × 7,761,982.20
  4. Step 4: Simplify right side
    8,505,999.60x = 99,035,126,232,610.69
  5. Step 5: Solve for x
    x = 99,035,126,232,610.69/8,505,999.60
  6. Step 6: Final answer
    x = 11,642,973.30

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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.