Finding the Fourth Proportional to 879,724.42, 1,314,128.25 and 637,918.76
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Solution
The fourth proportional to 879,724.42, 1,314,128.25 and 637,918.76 is: 952,920.09
Step by Step Solution
- Step 1: Write the proportion equation
879,724.42 : 1,314,128.25 = 637,918.76 : x - Step 2: Convert to fraction form
879,724.42/1,314,128.25 = 637,918.76/x - Step 3: Cross multiply
879,724.42x = 1,314,128.25 × 637,918.76 - Step 4: Simplify right side
879,724.42x = 838,307,067,006.29 - Step 5: Solve for x
x = 838,307,067,006.29/879,724.42 - Step 6: Final answer
x = 952,920.09
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.