Finding the Fourth Proportional to 690,918.19, 953,454.31 and 376,592.73
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Solution
The fourth proportional to 690,918.19, 953,454.31 and 376,592.73 is: 519,690.99
Step by Step Solution
- Step 1: Write the proportion equation
690,918.19 : 953,454.31 = 376,592.73 : x - Step 2: Convert to fraction form
690,918.19/953,454.31 = 376,592.73/x - Step 3: Cross multiply
690,918.19x = 953,454.31 × 376,592.73 - Step 4: Simplify right side
690,918.19x = 359,063,957,016.23 - Step 5: Solve for x
x = 359,063,957,016.23/690,918.19 - Step 6: Final answer
x = 519,690.99
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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.