Finding the Fourth Proportional to 643,781.48, 888,948.90 and 417,812.84
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Solution
The fourth proportional to 643,781.48, 888,948.90 and 417,812.84 is: 576,925.99
Step by Step Solution
- Step 1: Write the proportion equation
643,781.48 : 888,948.90 = 417,812.84 : x - Step 2: Convert to fraction form
643,781.48/888,948.90 = 417,812.84/x - Step 3: Cross multiply
643,781.48x = 888,948.90 × 417,812.84 - Step 4: Simplify right side
643,781.48x = 371,414,264,523.88 - Step 5: Solve for x
x = 371,414,264,523.88/643,781.48 - Step 6: Final answer
x = 576,925.99
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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.