Finding the Fourth Proportional to 910,115.99, 1,256,209.86 and 528,265.79
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Solution
The fourth proportional to 910,115.99, 1,256,209.86 and 528,265.79 is: 729,151.78
Step by Step Solution
- Step 1: Write the proportion equation
910,115.99 : 1,256,209.86 = 528,265.79 : x - Step 2: Convert to fraction form
910,115.99/1,256,209.86 = 528,265.79/x - Step 3: Cross multiply
910,115.99x = 1,256,209.86 × 528,265.79 - Step 4: Simplify right side
910,115.99x = 663,612,687,817.64 - Step 5: Solve for x
x = 663,612,687,817.64/910,115.99 - Step 6: Final answer
x = 729,151.78
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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.