Finding the Fourth Proportional to 1,536,475.40, 2,120,124.18 and 857,280.20
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Solution
The fourth proportional to 1,536,475.40, 2,120,124.18 and 857,280.20 is: 1,182,928.46
Step by Step Solution
- Step 1: Write the proportion equation
1,536,475.40 : 2,120,124.18 = 857,280.20 : x - Step 2: Convert to fraction form
1,536,475.40/2,120,124.18 = 857,280.20/x - Step 3: Cross multiply
1,536,475.40x = 2,120,124.18 × 857,280.20 - Step 4: Simplify right side
1,536,475.40x = 1,817,540,481,055.24 - Step 5: Solve for x
x = 1,817,540,481,055.24/1,536,475.40 - Step 6: Final answer
x = 1,182,928.46
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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.