Finding the Fourth Proportional to 630,405.89, 869,955.99 and 358,473.80
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Solution
The fourth proportional to 630,405.89, 869,955.99 and 358,473.80 is: 494,691.49
Step by Step Solution
- Step 1: Write the proportion equation
630,405.89 : 869,955.99 = 358,473.80 : x - Step 2: Convert to fraction form
630,405.89/869,955.99 = 358,473.80/x - Step 3: Cross multiply
630,405.89x = 869,955.99 × 358,473.80 - Step 4: Simplify right side
630,405.89x = 311,856,429,568.06 - Step 5: Solve for x
x = 311,856,429,568.06/630,405.89 - Step 6: Final answer
x = 494,691.49
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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.