Finding the Fourth Proportional to 692,136.80, 1,038,205.20 and 318,159.80
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Solution
The fourth proportional to 692,136.80, 1,038,205.20 and 318,159.80 is: 477,239.70
Step by Step Solution
- Step 1: Write the proportion equation
692,136.80 : 1,038,205.20 = 318,159.80 : x - Step 2: Convert to fraction form
692,136.80/1,038,205.20 = 318,159.80/x - Step 3: Cross multiply
692,136.80x = 1,038,205.20 × 318,159.80 - Step 4: Simplify right side
692,136.80x = 330,315,158,790.96 - Step 5: Solve for x
x = 330,315,158,790.96/692,136.80 - Step 6: Final answer
x = 477,239.70
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.