Finding the Fourth Proportional to 709,122.20, 978,602.51 and 386,844.26
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Solution
The fourth proportional to 709,122.20, 978,602.51 and 386,844.26 is: 533,852.65
Step by Step Solution
- Step 1: Write the proportion equation
709,122.20 : 978,602.51 = 386,844.26 : x - Step 2: Convert to fraction form
709,122.20/978,602.51 = 386,844.26/x - Step 3: Cross multiply
709,122.20x = 978,602.51 × 386,844.26 - Step 4: Simplify right side
709,122.20x = 378,566,759,889.19 - Step 5: Solve for x
x = 378,566,759,889.19/709,122.20 - Step 6: Final answer
x = 533,852.65
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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.