Finding the Fourth Proportional to 879,963.80, 1,319,945.70 and 288,987.80
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Solution
The fourth proportional to 879,963.80, 1,319,945.70 and 288,987.80 is: 433,481.70
Step by Step Solution
- Step 1: Write the proportion equation
879,963.80 : 1,319,945.70 = 288,987.80 : x - Step 2: Convert to fraction form
879,963.80/1,319,945.70 = 288,987.80/x - Step 3: Cross multiply
879,963.80x = 1,319,945.70 × 288,987.80 - Step 4: Simplify right side
879,963.80x = 381,448,203,962.46 - Step 5: Solve for x
x = 381,448,203,962.46/879,963.80 - Step 6: Final answer
x = 433,481.70
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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.