Finding the Fourth Proportional to 660,549.95, 911,553.79 and 358,743.95
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Solution
The fourth proportional to 660,549.95, 911,553.79 and 358,743.95 is: 495,063.85
Step by Step Solution
- Step 1: Write the proportion equation
660,549.95 : 911,553.79 = 358,743.95 : x - Step 2: Convert to fraction form
660,549.95/911,553.79 = 358,743.95/x - Step 3: Cross multiply
660,549.95x = 911,553.79 × 358,743.95 - Step 4: Simplify right side
660,549.95x = 327,014,401,807.44 - Step 5: Solve for x
x = 327,014,401,807.44/660,549.95 - Step 6: Final answer
x = 495,063.85
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1.5x scale
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.