Finding the Fourth Proportional to 1,421,060.80, 2,130,813.60 and 578,660.80
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Solution
The fourth proportional to 1,421,060.80, 2,130,813.60 and 578,660.80 is: 867,674.56
Step by Step Solution
- Step 1: Write the proportion equation
1,421,060.80 : 2,130,813.60 = 578,660.80 : x - Step 2: Convert to fraction form
1,421,060.80/2,130,813.60 = 578,660.80/x - Step 3: Cross multiply
1,421,060.80x = 2,130,813.60 × 578,660.80 - Step 4: Simplify right side
1,421,060.80x = 1,233,018,302,426.88 - Step 5: Solve for x
x = 1,233,018,302,426.88/1,421,060.80 - Step 6: Final answer
x = 867,674.56
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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.