Finding the Fourth Proportional to 10,519,724.40, 15,768,700.20 and 5,717,266.80
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Solution
The fourth proportional to 10,519,724.40, 15,768,700.20 and 5,717,266.80 is: 8,569,983.65
Step by Step Solution
- Step 1: Write the proportion equation
10,519,724.40 : 15,768,700.20 = 5,717,266.80 : x - Step 2: Convert to fraction form
10,519,724.40/15,768,700.20 = 5,717,266.80/x - Step 3: Cross multiply
10,519,724.40x = 15,768,700.20 × 5,717,266.80 - Step 4: Simplify right side
10,519,724.40x = 90,153,866,132,613.36 - Step 5: Solve for x
x = 90,153,866,132,613.36/10,519,724.40 - Step 6: Final answer
x = 8,569,983.65
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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.