Finding the Fourth Proportional to 7,046,187.12, 9,723,412.80 and 3,990,423.36
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Solution
The fourth proportional to 7,046,187.12, 9,723,412.80 and 3,990,423.36 is: 5,506,599.94
Step by Step Solution
- Step 1: Write the proportion equation
7,046,187.12 : 9,723,412.80 = 3,990,423.36 : x - Step 2: Convert to fraction form
7,046,187.12/9,723,412.80 = 3,990,423.36/x - Step 3: Cross multiply
7,046,187.12x = 9,723,412.80 × 3,990,423.36 - Step 4: Simplify right side
7,046,187.12x = 38,800,533,576,043.01 - Step 5: Solve for x
x = 38,800,533,576,043.01/7,046,187.12 - Step 6: Final answer
x = 5,506,599.94
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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.