Finding the Fourth Proportional to 739,427.08, 1,020,419.28 and 417,136.18
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Solution
The fourth proportional to 739,427.08, 1,020,419.28 and 417,136.18 is: 575,653.51
Step by Step Solution
- Step 1: Write the proportion equation
739,427.08 : 1,020,419.28 = 417,136.18 : x - Step 2: Convert to fraction form
739,427.08/1,020,419.28 = 417,136.18/x - Step 3: Cross multiply
739,427.08x = 1,020,419.28 × 417,136.18 - Step 4: Simplify right side
739,427.08x = 425,653,793,269.77 - Step 5: Solve for x
x = 425,653,793,269.77/739,427.08 - Step 6: Final answer
x = 575,653.51
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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.