Home / 405,201,531.54-607,862,832.60-128,861,760.90

Finding the Fourth Proportional to 405,201,531.54, 607,862,832.60 and 128,861,760.90

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Solution

The fourth proportional to 405,201,531.54, 607,862,832.60 and 128,861,760.90 is: 193,311,892.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,201,531.54 : 607,862,832.60 = 128,861,760.90 : x
  2. Step 2: Convert to fraction form
    405,201,531.54/607,862,832.60 = 128,861,760.90/x
  3. Step 3: Cross multiply
    405,201,531.54x = 607,862,832.60 × 128,861,760.90
  4. Step 4: Simplify right side
    405,201,531.54x = 78,330,274,994,497,936
  5. Step 5: Solve for x
    x = 78,330,274,994,497,936/405,201,531.54
  6. Step 6: Final answer
    x = 193,311,892.72

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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.