Home / 9,989,447.09-13,785,436.98-5,405,768.46

Finding the Fourth Proportional to 9,989,447.09, 13,785,436.98 and 5,405,768.46

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Solution

The fourth proportional to 9,989,447.09, 13,785,436.98 and 5,405,768.46 is: 7,459,960.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,989,447.09 : 13,785,436.98 = 5,405,768.46 : x
  2. Step 2: Convert to fraction form
    9,989,447.09/13,785,436.98 = 5,405,768.46/x
  3. Step 3: Cross multiply
    9,989,447.09x = 13,785,436.98 × 5,405,768.46
  4. Step 4: Simplify right side
    9,989,447.09x = 74,520,880,433,801.66
  5. Step 5: Solve for x
    x = 74,520,880,433,801.66/9,989,447.09
  6. Step 6: Final answer
    x = 7,459,960.48

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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.