Finding the Fourth Proportional to 709,904.52, 979,662.06 and 387,613.08
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Solution
The fourth proportional to 709,904.52, 979,662.06 and 387,613.08 is: 534,902.68
Step by Step Solution
- Step 1: Write the proportion equation
709,904.52 : 979,662.06 = 387,613.08 : x - Step 2: Convert to fraction form
709,904.52/979,662.06 = 387,613.08/x - Step 3: Cross multiply
709,904.52x = 979,662.06 × 387,613.08 - Step 4: Simplify right side
709,904.52x = 379,729,828,435.75 - Step 5: Solve for x
x = 379,729,828,435.75/709,904.52 - Step 6: Final answer
x = 534,902.68
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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.