Finding the Fourth Proportional to 679,316.79, 1,019,251.97 and 342,454.53
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Solution
The fourth proportional to 679,316.79, 1,019,251.97 and 342,454.53 is: 513,821.32
Step by Step Solution
- Step 1: Write the proportion equation
679,316.79 : 1,019,251.97 = 342,454.53 : x - Step 2: Convert to fraction form
679,316.79/1,019,251.97 = 342,454.53/x - Step 3: Cross multiply
679,316.79x = 1,019,251.97 × 342,454.53 - Step 4: Simplify right side
679,316.79x = 349,047,452,625.65 - Step 5: Solve for x
x = 349,047,452,625.65/679,316.79 - Step 6: Final answer
x = 513,821.32
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.