Finding the Fourth Proportional to 709,762.40, 979,486.94 and 387,486.08
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Solution
The fourth proportional to 709,762.40, 979,486.94 and 387,486.08 is: 534,738.88
Step by Step Solution
- Step 1: Write the proportion equation
709,762.40 : 979,486.94 = 387,486.08 : x - Step 2: Convert to fraction form
709,762.40/979,486.94 = 387,486.08/x - Step 3: Cross multiply
709,762.40x = 979,486.94 × 387,486.08 - Step 4: Simplify right side
709,762.40x = 379,537,552,854.37 - Step 5: Solve for x
x = 379,537,552,854.37/709,762.40 - Step 6: Final answer
x = 534,738.88
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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.