Finding the Fourth Proportional to 709,916.10, 979,723.90 and 387,656.10
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Solution
The fourth proportional to 709,916.10, 979,723.90 and 387,656.10 is: 534,987.09
Step by Step Solution
- Step 1: Write the proportion equation
709,916.10 : 979,723.90 = 387,656.10 : x - Step 2: Convert to fraction form
709,916.10/979,723.90 = 387,656.10/x - Step 3: Cross multiply
709,916.10x = 979,723.90 × 387,656.10 - Step 4: Simplify right side
709,916.10x = 379,795,946,150.79 - Step 5: Solve for x
x = 379,795,946,150.79/709,916.10 - Step 6: Final answer
x = 534,987.09
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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.