Finding the Fourth Proportional to 826,468.11, 1,239,136.21 and 420,875.21
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Solution
The fourth proportional to 826,468.11, 1,239,136.21 and 420,875.21 is: 631,024.60
Step by Step Solution
- Step 1: Write the proportion equation
826,468.11 : 1,239,136.21 = 420,875.21 : x - Step 2: Convert to fraction form
826,468.11/1,239,136.21 = 420,875.21/x - Step 3: Cross multiply
826,468.11x = 1,239,136.21 × 420,875.21 - Step 4: Simplify right side
826,468.11x = 521,521,709,256.15 - Step 5: Solve for x
x = 521,521,709,256.15/826,468.11 - Step 6: Final answer
x = 631,024.60
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.