Finding the Fourth Proportional to 644,085.84, 888,878.70 and 372,203.67
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Solution
The fourth proportional to 644,085.84, 888,878.70 and 372,203.67 is: 513,664.32
Step by Step Solution
- Step 1: Write the proportion equation
644,085.84 : 888,878.70 = 372,203.67 : x - Step 2: Convert to fraction form
644,085.84/888,878.70 = 372,203.67/x - Step 3: Cross multiply
644,085.84x = 888,878.70 × 372,203.67 - Step 4: Simplify right side
644,085.84x = 330,843,914,324.83 - Step 5: Solve for x
x = 330,843,914,324.83/644,085.84 - Step 6: Final answer
x = 513,664.32
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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.