Finding the Fourth Proportional to 7,809,881.60, 11,721,820.80 and 6,746,124.80
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Solution
The fourth proportional to 7,809,881.60, 11,721,820.80 and 6,746,124.80 is: 10,125,232.37
Step by Step Solution
- Step 1: Write the proportion equation
7,809,881.60 : 11,721,820.80 = 6,746,124.80 : x - Step 2: Convert to fraction form
7,809,881.60/11,721,820.80 = 6,746,124.80/x - Step 3: Cross multiply
7,809,881.60x = 11,721,820.80 × 6,746,124.80 - Step 4: Simplify right side
7,809,881.60x = 79,076,866,000,035.84 - Step 5: Solve for x
x = 79,076,866,000,035.84/7,809,881.60 - Step 6: Final answer
x = 10,125,232.37
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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.