Finding the Fourth Proportional to 1,246,288.10, 1,869,432.15 and 771,433.70
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Solution
The fourth proportional to 1,246,288.10, 1,869,432.15 and 771,433.70 is: 1,157,150.55
Step by Step Solution
- Step 1: Write the proportion equation
1,246,288.10 : 1,869,432.15 = 771,433.70 : x - Step 2: Convert to fraction form
1,246,288.10/1,869,432.15 = 771,433.70/x - Step 3: Cross multiply
1,246,288.10x = 1,869,432.15 × 771,433.70 - Step 4: Simplify right side
1,246,288.10x = 1,442,142,960,373.45 - Step 5: Solve for x
x = 1,442,142,960,373.45/1,246,288.10 - Step 6: Final answer
x = 1,157,150.55
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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.