Finding the Fourth Proportional to 879,809.48, 1,319,713.74 and 318,843.08
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Solution
The fourth proportional to 879,809.48, 1,319,713.74 and 318,843.08 is: 478,264.45
Step by Step Solution
- Step 1: Write the proportion equation
879,809.48 : 1,319,713.74 = 318,843.08 : x - Step 2: Convert to fraction form
879,809.48/1,319,713.74 = 318,843.08/x - Step 3: Cross multiply
879,809.48x = 1,319,713.74 × 318,843.08 - Step 4: Simplify right side
879,809.48x = 420,781,593,579.92 - Step 5: Solve for x
x = 420,781,593,579.92/879,809.48 - Step 6: Final answer
x = 478,264.45
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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.