Home / 699,407,861.46-965,267,486.64-398,066,443.74

Finding the Fourth Proportional to 699,407,861.46, 965,267,486.64 and 398,066,443.74

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Solution

The fourth proportional to 699,407,861.46, 965,267,486.64 and 398,066,443.74 is: 549,379,863.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,407,861.46 : 965,267,486.64 = 398,066,443.74 : x
  2. Step 2: Convert to fraction form
    699,407,861.46/965,267,486.64 = 398,066,443.74/x
  3. Step 3: Cross multiply
    699,407,861.46x = 965,267,486.64 × 398,066,443.74
  4. Step 4: Simplify right side
    699,407,861.46x = 384,240,595,664,632,768
  5. Step 5: Solve for x
    x = 384,240,595,664,632,768/699,407,861.46
  6. Step 6: Final answer
    x = 549,379,863.79

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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.