Finding the Fourth Proportional to 898,419.28, 1,239,810.12 and 490,517.62
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Solution
The fourth proportional to 898,419.28, 1,239,810.12 and 490,517.62 is: 676,909.68
Step by Step Solution
- Step 1: Write the proportion equation
898,419.28 : 1,239,810.12 = 490,517.62 : x - Step 2: Convert to fraction form
898,419.28/1,239,810.12 = 490,517.62/x - Step 3: Cross multiply
898,419.28x = 1,239,810.12 × 490,517.62 - Step 4: Simplify right side
898,419.28x = 608,148,709,314.32 - Step 5: Solve for x
x = 608,148,709,314.32/898,419.28 - Step 6: Final answer
x = 676,909.68
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1.5x scale
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.