Finding the Fourth Proportional to 1,558,621.80, 2,142,641.35 and 1,340,025.18
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Solution
The fourth proportional to 1,558,621.80, 2,142,641.35 and 1,340,025.18 is: 1,842,136.02
Step by Step Solution
- Step 1: Write the proportion equation
1,558,621.80 : 2,142,641.35 = 1,340,025.18 : x - Step 2: Convert to fraction form
1,558,621.80/2,142,641.35 = 1,340,025.18/x - Step 3: Cross multiply
1,558,621.80x = 2,142,641.35 × 1,340,025.18 - Step 4: Simplify right side
1,558,621.80x = 2,871,193,360,709.19 - Step 5: Solve for x
x = 2,871,193,360,709.19/1,558,621.80 - Step 6: Final answer
x = 1,842,136.02
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Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.