Finding the Fourth Proportional to 715,795.12, 987,690.24 and 409,823.20
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Solution
The fourth proportional to 715,795.12, 987,690.24 and 409,823.20 is: 565,494.74
Step by Step Solution
- Step 1: Write the proportion equation
715,795.12 : 987,690.24 = 409,823.20 : x - Step 2: Convert to fraction form
715,795.12/987,690.24 = 409,823.20/x - Step 3: Cross multiply
715,795.12x = 987,690.24 × 409,823.20 - Step 4: Simplify right side
715,795.12x = 404,778,374,765.57 - Step 5: Solve for x
x = 404,778,374,765.57/715,795.12 - Step 6: Final answer
x = 565,494.74
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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.