Finding the Fourth Proportional to 656,830.19, 906,425.16 and 355,024.19
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Solution
The fourth proportional to 656,830.19, 906,425.16 and 355,024.19 is: 489,933.11
Step by Step Solution
- Step 1: Write the proportion equation
656,830.19 : 906,425.16 = 355,024.19 : x - Step 2: Convert to fraction form
656,830.19/906,425.16 = 355,024.19/x - Step 3: Cross multiply
656,830.19x = 906,425.16 × 355,024.19 - Step 4: Simplify right side
656,830.19x = 321,802,858,224.62 - Step 5: Solve for x
x = 321,802,858,224.62/656,830.19 - Step 6: Final answer
x = 489,933.11
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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.