Finding the Fourth Proportional to 977,979.76, 1,350,054.21 and 615,935.68
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Solution
The fourth proportional to 977,979.76, 1,350,054.21 and 615,935.68 is: 850,269.70
Step by Step Solution
- Step 1: Write the proportion equation
977,979.76 : 1,350,054.21 = 615,935.68 : x - Step 2: Convert to fraction form
977,979.76/1,350,054.21 = 615,935.68/x - Step 3: Cross multiply
977,979.76x = 1,350,054.21 × 615,935.68 - Step 4: Simplify right side
977,979.76x = 831,546,557,873.21 - Step 5: Solve for x
x = 831,546,557,873.21/977,979.76 - Step 6: Final answer
x = 850,269.70
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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.