Finding the Fourth Proportional to 664,982.60, 917,681.86 and 378,521.14
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Solution
The fourth proportional to 664,982.60, 917,681.86 and 378,521.14 is: 522,362.52
Step by Step Solution
- Step 1: Write the proportion equation
664,982.60 : 917,681.86 = 378,521.14 : x - Step 2: Convert to fraction form
664,982.60/917,681.86 = 378,521.14/x - Step 3: Cross multiply
664,982.60x = 917,681.86 × 378,521.14 - Step 4: Simplify right side
664,982.60x = 347,361,983,804.52 - Step 5: Solve for x
x = 347,361,983,804.52/664,982.60 - Step 6: Final answer
x = 522,362.52
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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.