Finding the Fourth Proportional to 1,211,445.08, 1,817,159.42 and 578,439.80
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Solution
The fourth proportional to 1,211,445.08, 1,817,159.42 and 578,439.80 is: 867,655.78
Step by Step Solution
- Step 1: Write the proportion equation
1,211,445.08 : 1,817,159.42 = 578,439.80 : x - Step 2: Convert to fraction form
1,211,445.08/1,817,159.42 = 578,439.80/x - Step 3: Cross multiply
1,211,445.08x = 1,817,159.42 × 578,439.80 - Step 4: Simplify right side
1,211,445.08x = 1,051,117,331,472.92 - Step 5: Solve for x
x = 1,051,117,331,472.92/1,211,445.08 - Step 6: Final answer
x = 867,655.78
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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.