Home / 427,008,477.96-640,540,820.61-111,882,222.90

Finding the Fourth Proportional to 427,008,477.96, 640,540,820.61 and 111,882,222.90

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Solution

The fourth proportional to 427,008,477.96, 640,540,820.61 and 111,882,222.90 is: 167,830,697.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,008,477.96 : 640,540,820.61 = 111,882,222.90 : x
  2. Step 2: Convert to fraction form
    427,008,477.96/640,540,820.61 = 111,882,222.90/x
  3. Step 3: Cross multiply
    427,008,477.96x = 640,540,820.61 × 111,882,222.90
  4. Step 4: Simplify right side
    427,008,477.96x = 71,665,130,868,036,936
  5. Step 5: Solve for x
    x = 71,665,130,868,036,936/427,008,477.96
  6. Step 6: Final answer
    x = 167,830,697.91

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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.