Finding the Fourth Proportional to 630,464.49, 870,043.86 and 343,990.62
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Solution
The fourth proportional to 630,464.49, 870,043.86 and 343,990.62 is: 474,708.62
Step by Step Solution
- Step 1: Write the proportion equation
630,464.49 : 870,043.86 = 343,990.62 : x - Step 2: Convert to fraction form
630,464.49/870,043.86 = 343,990.62/x - Step 3: Cross multiply
630,464.49x = 870,043.86 × 343,990.62 - Step 4: Simplify right side
630,464.49x = 299,286,926,828.59 - Step 5: Solve for x
x = 299,286,926,828.59/630,464.49 - Step 6: Final answer
x = 474,708.62
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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.