Finding the Fourth Proportional to 6,912,554.20, 10,368,831.30 and 6,520,643.80
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Solution
The fourth proportional to 6,912,554.20, 10,368,831.30 and 6,520,643.80 is: 9,780,965.70
Step by Step Solution
- Step 1: Write the proportion equation
6,912,554.20 : 10,368,831.30 = 6,520,643.80 : x - Step 2: Convert to fraction form
6,912,554.20/10,368,831.30 = 6,520,643.80/x - Step 3: Cross multiply
6,912,554.20x = 10,368,831.30 × 6,520,643.80 - Step 4: Simplify right side
6,912,554.20x = 67,611,455,529,590.95 - Step 5: Solve for x
x = 67,611,455,529,590.95/6,912,554.20 - Step 6: Final answer
x = 9,780,965.70
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1.5x scale
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.