Finding the Fourth Proportional to 744,777.70, 1,117,312.35 and 318,312.70
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Solution
The fourth proportional to 744,777.70, 1,117,312.35 and 318,312.70 is: 477,531.36
Step by Step Solution
- Step 1: Write the proportion equation
744,777.70 : 1,117,312.35 = 318,312.70 : x - Step 2: Convert to fraction form
744,777.70/1,117,312.35 = 318,312.70/x - Step 3: Cross multiply
744,777.70x = 1,117,312.35 × 318,312.70 - Step 4: Simplify right side
744,777.70x = 355,654,710,871.85 - Step 5: Solve for x
x = 355,654,710,871.85/744,777.70 - Step 6: Final answer
x = 477,531.36
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1.5x scale
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.