Finding the Fourth Proportional to 764,430.60, 1,054,926.86 and 420,281.08
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Solution
The fourth proportional to 764,430.60, 1,054,926.86 and 420,281.08 is: 579,994.84
Step by Step Solution
- Step 1: Write the proportion equation
764,430.60 : 1,054,926.86 = 420,281.08 : x - Step 2: Convert to fraction form
764,430.60/1,054,926.86 = 420,281.08/x - Step 3: Cross multiply
764,430.60x = 1,054,926.86 × 420,281.08 - Step 4: Simplify right side
764,430.60x = 443,365,800,041.81 - Step 5: Solve for x
x = 443,365,800,041.81/764,430.60 - Step 6: Final answer
x = 579,994.84
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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.