Finding the Fourth Proportional to 826,471.08, 1,239,140.64 and 420,878.16
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Solution
The fourth proportional to 826,471.08, 1,239,140.64 and 420,878.16 is: 631,029.02
Step by Step Solution
- Step 1: Write the proportion equation
826,471.08 : 1,239,140.64 = 420,878.16 : x - Step 2: Convert to fraction form
826,471.08/1,239,140.64 = 420,878.16/x - Step 3: Cross multiply
826,471.08x = 1,239,140.64 × 420,878.16 - Step 4: Simplify right side
826,471.08x = 521,527,232,544.42 - Step 5: Solve for x
x = 521,527,232,544.42/826,471.08 - Step 6: Final answer
x = 631,029.02
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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.