Finding the Fourth Proportional to 709,766.16, 979,492.12 and 387,489.84
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Solution
The fourth proportional to 709,766.16, 979,492.12 and 387,489.84 is: 534,744.07
Step by Step Solution
- Step 1: Write the proportion equation
709,766.16 : 979,492.12 = 387,489.84 : x - Step 2: Convert to fraction form
709,766.16/979,492.12 = 387,489.84/x - Step 3: Cross multiply
709,766.16x = 979,492.12 × 387,489.84 - Step 4: Simplify right side
709,766.16x = 379,543,244,860.06 - Step 5: Solve for x
x = 379,543,244,860.06/709,766.16 - Step 6: Final answer
x = 534,744.07
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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.