Finding the Fourth Proportional to 630,338.42, 869,908.12 and 358,431.61
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Solution
The fourth proportional to 630,338.42, 869,908.12 and 358,431.61 is: 494,658.99
Step by Step Solution
- Step 1: Write the proportion equation
630,338.42 : 869,908.12 = 358,431.61 : x - Step 2: Convert to fraction form
630,338.42/869,908.12 = 358,431.61/x - Step 3: Cross multiply
630,338.42x = 869,908.12 × 358,431.61 - Step 4: Simplify right side
630,338.42x = 311,802,564,932.82 - Step 5: Solve for x
x = 311,802,564,932.82/630,338.42 - Step 6: Final answer
x = 494,658.99
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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.