Finding the Fourth Proportional to 875,417.60, 1,313,644.80 and 638,163.20
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Solution
The fourth proportional to 875,417.60, 1,313,644.80 and 638,163.20 is: 957,622.70
Step by Step Solution
- Step 1: Write the proportion equation
875,417.60 : 1,313,644.80 = 638,163.20 : x - Step 2: Convert to fraction form
875,417.60/1,313,644.80 = 638,163.20/x - Step 3: Cross multiply
875,417.60x = 1,313,644.80 × 638,163.20 - Step 4: Simplify right side
875,417.60x = 838,319,769,231.36 - Step 5: Solve for x
x = 838,319,769,231.36/875,417.60 - Step 6: Final answer
x = 957,622.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.