Finding the Fourth Proportional to 640,463.76, 883,885.74 and 353,977.68
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Solution
The fourth proportional to 640,463.76, 883,885.74 and 353,977.68 is: 488,514.48
Step by Step Solution
- Step 1: Write the proportion equation
640,463.76 : 883,885.74 = 353,977.68 : x - Step 2: Convert to fraction form
640,463.76/883,885.74 = 353,977.68/x - Step 3: Cross multiply
640,463.76x = 883,885.74 × 353,977.68 - Step 4: Simplify right side
640,463.76x = 312,875,823,630.28 - Step 5: Solve for x
x = 312,875,823,630.28/640,463.76 - Step 6: Final answer
x = 488,514.48
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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.