Finding the Fourth Proportional to 708,817.68, 978,130.92 and 402,853.08
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Solution
The fourth proportional to 708,817.68, 978,130.92 and 402,853.08 is: 555,915.95
Step by Step Solution
- Step 1: Write the proportion equation
708,817.68 : 978,130.92 = 402,853.08 : x - Step 2: Convert to fraction form
708,817.68/978,130.92 = 402,853.08/x - Step 3: Cross multiply
708,817.68x = 978,130.92 × 402,853.08 - Step 4: Simplify right side
708,817.68x = 394,043,053,765.23 - Step 5: Solve for x
x = 394,043,053,765.23/708,817.68 - Step 6: Final answer
x = 555,915.95
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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.