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Finding the Fourth Proportional to 716,632,247.94, 988,889,453.37 and 399,068,497.41

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Solution

The fourth proportional to 716,632,247.94, 988,889,453.37 and 399,068,497.41 is: 550,679,416.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,632,247.94 : 988,889,453.37 = 399,068,497.41 : x
  2. Step 2: Convert to fraction form
    716,632,247.94/988,889,453.37 = 399,068,497.41/x
  3. Step 3: Cross multiply
    716,632,247.94x = 988,889,453.37 × 399,068,497.41
  4. Step 4: Simplify right side
    716,632,247.94x = 394,634,628,260,962,176
  5. Step 5: Solve for x
    x = 394,634,628,260,962,176/716,632,247.94
  6. Step 6: Final answer
    x = 550,679,416.67

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1.5x scale

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.