Finding the Fourth Proportional to 977,979.15, 1,349,482.68 and 542,391.29
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Solution
The fourth proportional to 977,979.15, 1,349,482.68 and 542,391.29 is: 748,428.68
Step by Step Solution
- Step 1: Write the proportion equation
977,979.15 : 1,349,482.68 = 542,391.29 : x - Step 2: Convert to fraction form
977,979.15/1,349,482.68 = 542,391.29/x - Step 3: Cross multiply
977,979.15x = 1,349,482.68 × 542,391.29 - Step 4: Simplify right side
977,979.15x = 731,947,644,890.44 - Step 5: Solve for x
x = 731,947,644,890.44/977,979.15 - Step 6: Final answer
x = 748,428.68
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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.