Home / 393,490,715.88-543,065,064.66-228,478,284.84

Finding the Fourth Proportional to 393,490,715.88, 543,065,064.66 and 228,478,284.84

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Solution

The fourth proportional to 393,490,715.88, 543,065,064.66 and 228,478,284.84 is: 315,327,832.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,490,715.88 : 543,065,064.66 = 228,478,284.84 : x
  2. Step 2: Convert to fraction form
    393,490,715.88/543,065,064.66 = 228,478,284.84/x
  3. Step 3: Cross multiply
    393,490,715.88x = 543,065,064.66 × 228,478,284.84
  4. Step 4: Simplify right side
    393,490,715.88x = 124,078,574,530,040,496
  5. Step 5: Solve for x
    x = 124,078,574,530,040,496/393,490,715.88
  6. Step 6: Final answer
    x = 315,327,832.46

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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.