Home / 438,880,997.32-605,661,636.12-240,641,989.76

Finding the Fourth Proportional to 438,880,997.32, 605,661,636.12 and 240,641,989.76

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Solution

The fourth proportional to 438,880,997.32, 605,661,636.12 and 240,641,989.76 is: 332,089,158.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,880,997.32 : 605,661,636.12 = 240,641,989.76 : x
  2. Step 2: Convert to fraction form
    438,880,997.32/605,661,636.12 = 240,641,989.76/x
  3. Step 3: Cross multiply
    438,880,997.32x = 605,661,636.12 × 240,641,989.76
  4. Step 4: Simplify right side
    438,880,997.32x = 145,747,621,237,213,888
  5. Step 5: Solve for x
    x = 145,747,621,237,213,888/438,880,997.32
  6. Step 6: Final answer
    x = 332,089,158.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.