Home / 9,989,670.39-13,785,779.79-5,405,990.55

Finding the Fourth Proportional to 9,989,670.39, 13,785,779.79 and 5,405,990.55

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Solution

The fourth proportional to 9,989,670.39, 13,785,779.79 and 5,405,990.55 is: 7,460,285.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,989,670.39 : 13,785,779.79 = 5,405,990.55 : x
  2. Step 2: Convert to fraction form
    9,989,670.39/13,785,779.79 = 5,405,990.55/x
  3. Step 3: Cross multiply
    9,989,670.39x = 13,785,779.79 × 5,405,990.55
  4. Step 4: Simplify right side
    9,989,670.39x = 74,525,795,269,120.98
  5. Step 5: Solve for x
    x = 74,525,795,269,120.98/9,989,670.39
  6. Step 6: Final answer
    x = 7,460,285.71

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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.