Finding the Fourth Proportional to 1,420,475.40, 2,130,713.09 and 521,528.18
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Solution
The fourth proportional to 1,420,475.40, 2,130,713.09 and 521,528.18 is: 782,292.27
Step by Step Solution
- Step 1: Write the proportion equation
1,420,475.40 : 2,130,713.09 = 521,528.18 : x - Step 2: Convert to fraction form
1,420,475.40/2,130,713.09 = 521,528.18/x - Step 3: Cross multiply
1,420,475.40x = 2,130,713.09 × 521,528.18 - Step 4: Simplify right side
1,420,475.40x = 1,111,226,919,929.88 - Step 5: Solve for x
x = 1,111,226,919,929.88/1,420,475.40 - Step 6: Final answer
x = 782,292.27
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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.