Finding the Fourth Proportional to 910,419.12, 1,256,378.51 and 502,521.09
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Solution
The fourth proportional to 910,419.12, 1,256,378.51 and 502,521.09 is: 693,479.17
Step by Step Solution
- Step 1: Write the proportion equation
910,419.12 : 1,256,378.51 = 502,521.09 : x - Step 2: Convert to fraction form
910,419.12/1,256,378.51 = 502,521.09/x - Step 3: Cross multiply
910,419.12x = 1,256,378.51 × 502,521.09 - Step 4: Simplify right side
910,419.12x = 631,356,695,785.17 - Step 5: Solve for x
x = 631,356,695,785.17/910,419.12 - Step 6: Final answer
x = 693,479.17
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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.