Home / 9,989,370.68-13,785,343.74-5,405,692.05

Finding the Fourth Proportional to 9,989,370.68, 13,785,343.74 and 5,405,692.05

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Solution

The fourth proportional to 9,989,370.68, 13,785,343.74 and 5,405,692.05 is: 7,459,861.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,989,370.68 : 13,785,343.74 = 5,405,692.05 : x
  2. Step 2: Convert to fraction form
    9,989,370.68/13,785,343.74 = 5,405,692.05/x
  3. Step 3: Cross multiply
    9,989,370.68x = 13,785,343.74 × 5,405,692.05
  4. Step 4: Simplify right side
    9,989,370.68x = 74,519,323,061,835.27
  5. Step 5: Solve for x
    x = 74,519,323,061,835.27/9,989,370.68
  6. Step 6: Final answer
    x = 7,459,861.64

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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.