Finding the Fourth Proportional to 991,408.42, 1,368,139.44 and 583,507.18
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Solution
The fourth proportional to 991,408.42, 1,368,139.44 and 583,507.18 is: 805,237.45
Step by Step Solution
- Step 1: Write the proportion equation
991,408.42 : 1,368,139.44 = 583,507.18 : x - Step 2: Convert to fraction form
991,408.42/1,368,139.44 = 583,507.18/x - Step 3: Cross multiply
991,408.42x = 1,368,139.44 × 583,507.18 - Step 4: Simplify right side
991,408.42x = 798,319,186,481.18 - Step 5: Solve for x
x = 798,319,186,481.18/991,408.42 - Step 6: Final answer
x = 805,237.45
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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.