Finding the Fourth Proportional to 1,319,708.72, 1,979,562.36 and 478,259.12
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Solution
The fourth proportional to 1,319,708.72, 1,979,562.36 and 478,259.12 is: 717,388.42
Step by Step Solution
- Step 1: Write the proportion equation
1,319,708.72 : 1,979,562.36 = 478,259.12 : x - Step 2: Convert to fraction form
1,319,708.72/1,979,562.36 = 478,259.12/x - Step 3: Cross multiply
1,319,708.72x = 1,979,562.36 × 478,259.12 - Step 4: Simplify right side
1,319,708.72x = 946,743,752,278.72 - Step 5: Solve for x
x = 946,743,752,278.72/1,319,708.72 - Step 6: Final answer
x = 717,388.42
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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.