Finding the Fourth Proportional to 630,378.69, 869,905.37 and 343,898.70
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Solution
The fourth proportional to 630,378.69, 869,905.37 and 343,898.70 is: 474,570.81
Step by Step Solution
- Step 1: Write the proportion equation
630,378.69 : 869,905.37 = 343,898.70 : x - Step 2: Convert to fraction form
630,378.69/869,905.37 = 343,898.70/x - Step 3: Cross multiply
630,378.69x = 869,905.37 × 343,898.70 - Step 4: Simplify right side
630,378.69x = 299,159,324,146.53 - Step 5: Solve for x
x = 299,159,324,146.53/630,378.69 - Step 6: Final answer
x = 474,570.81
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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.