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Finding the Fourth Proportional to 613,989.16, 919,965.57 and 373,375.22

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Solution

The fourth proportional to 613,989.16, 919,965.57 and 373,375.22 is: 559,443.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,989.16 : 919,965.57 = 373,375.22 : x
  2. Step 2: Convert to fraction form
    613,989.16/919,965.57 = 373,375.22/x
  3. Step 3: Cross multiply
    613,989.16x = 919,965.57 × 373,375.22
  4. Step 4: Simplify right side
    613,989.16x = 343,492,348,028.82
  5. Step 5: Solve for x
    x = 343,492,348,028.82/613,989.16
  6. Step 6: Final answer
    x = 559,443.67

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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.