Finding the Fourth Proportional to 715,805.08, 987,813.03 and 409,886.08
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Solution
The fourth proportional to 715,805.08, 987,813.03 and 409,886.08 is: 565,643.95
Step by Step Solution
- Step 1: Write the proportion equation
715,805.08 : 987,813.03 = 409,886.08 : x - Step 2: Convert to fraction form
715,805.08/987,813.03 = 409,886.08/x - Step 3: Cross multiply
715,805.08x = 987,813.03 × 409,886.08 - Step 4: Simplify right side
715,805.08x = 404,890,810,639.62 - Step 5: Solve for x
x = 404,890,810,639.62/715,805.08 - Step 6: Final answer
x = 565,643.95
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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.