Finding the Fourth Proportional to 640,132.86, 883,557.27 and 378,716.70
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Solution
The fourth proportional to 640,132.86, 883,557.27 and 378,716.70 is: 522,731.94
Step by Step Solution
- Step 1: Write the proportion equation
640,132.86 : 883,557.27 = 378,716.70 : x - Step 2: Convert to fraction form
640,132.86/883,557.27 = 378,716.70/x - Step 3: Cross multiply
640,132.86x = 883,557.27 × 378,716.70 - Step 4: Simplify right side
640,132.86x = 334,617,893,555.41 - Step 5: Solve for x
x = 334,617,893,555.41/640,132.86 - Step 6: Final answer
x = 522,731.94
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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.