Finding the Fourth Proportional to 630,389.66, 869,920.56 and 343,909.70
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Solution
The fourth proportional to 630,389.66, 869,920.56 and 343,909.70 is: 474,586.02
Step by Step Solution
- Step 1: Write the proportion equation
630,389.66 : 869,920.56 = 343,909.70 : x - Step 2: Convert to fraction form
630,389.66/869,920.56 = 343,909.70/x - Step 3: Cross multiply
630,389.66x = 869,920.56 × 343,909.70 - Step 4: Simplify right side
630,389.66x = 299,174,118,813.43 - Step 5: Solve for x
x = 299,174,118,813.43/630,389.66 - Step 6: Final answer
x = 474,586.02
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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.