Finding the Fourth Proportional to 630,408.14, 869,959.10 and 358,476.05
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Solution
The fourth proportional to 630,408.14, 869,959.10 and 358,476.05 is: 494,694.60
Step by Step Solution
- Step 1: Write the proportion equation
630,408.14 : 869,959.10 = 358,476.05 : x - Step 2: Convert to fraction form
630,408.14/869,959.10 = 358,476.05/x - Step 3: Cross multiply
630,408.14x = 869,959.10 × 358,476.05 - Step 4: Simplify right side
630,408.14x = 311,859,500,037.18 - Step 5: Solve for x
x = 311,859,500,037.18/630,408.14 - Step 6: Final answer
x = 494,694.60
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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.