Finding the Fourth Proportional to 621,762.60, 931,331.70 and 555,277.80
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Solution
The fourth proportional to 621,762.60, 931,331.70 and 555,277.80 is: 831,744.81
Step by Step Solution
- Step 1: Write the proportion equation
621,762.60 : 931,331.70 = 555,277.80 : x - Step 2: Convert to fraction form
621,762.60/931,331.70 = 555,277.80/x - Step 3: Cross multiply
621,762.60x = 931,331.70 × 555,277.80 - Step 4: Simplify right side
621,762.60x = 517,147,817,446.26 - Step 5: Solve for x
x = 517,147,817,446.26/621,762.60 - Step 6: Final answer
x = 831,744.81
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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.