Finding the Fourth Proportional to 916,136.14, 1,264,269.38 and 508,237.98
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Solution
The fourth proportional to 916,136.14, 1,264,269.38 and 508,237.98 is: 701,369.25
Step by Step Solution
- Step 1: Write the proportion equation
916,136.14 : 1,264,269.38 = 508,237.98 : x - Step 2: Convert to fraction form
916,136.14/1,264,269.38 = 508,237.98/x - Step 3: Cross multiply
916,136.14x = 1,264,269.38 × 508,237.98 - Step 4: Simplify right side
916,136.14x = 642,549,715,867.05 - Step 5: Solve for x
x = 642,549,715,867.05/916,136.14 - Step 6: Final answer
x = 701,369.25
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1.5x scale
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.