Home / 12,128,499.60-18,192,749.40-3,607,728.90

Finding the Fourth Proportional to 12,128,499.60, 18,192,749.40 and 3,607,728.90

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Solution

The fourth proportional to 12,128,499.60, 18,192,749.40 and 3,607,728.90 is: 5,411,593.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,128,499.60 : 18,192,749.40 = 3,607,728.90 : x
  2. Step 2: Convert to fraction form
    12,128,499.60/18,192,749.40 = 3,607,728.90/x
  3. Step 3: Cross multiply
    12,128,499.60x = 18,192,749.40 × 3,607,728.90
  4. Step 4: Simplify right side
    12,128,499.60x = 65,634,507,780,837.66
  5. Step 5: Solve for x
    x = 65,634,507,780,837.66/12,128,499.60
  6. Step 6: Final answer
    x = 5,411,593.35

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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.