Finding the Fourth Proportional to 1,178,385.18, 1,768,352.87 and 646,279.85
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Solution
The fourth proportional to 1,178,385.18, 1,768,352.87 and 646,279.85 is: 969,844.87
Step by Step Solution
- Step 1: Write the proportion equation
1,178,385.18 : 1,768,352.87 = 646,279.85 : x - Step 2: Convert to fraction form
1,178,385.18/1,768,352.87 = 646,279.85/x - Step 3: Cross multiply
1,178,385.18x = 1,768,352.87 × 646,279.85 - Step 4: Simplify right side
1,178,385.18x = 1,142,850,820,344.60 - Step 5: Solve for x
x = 1,142,850,820,344.60/1,178,385.18 - Step 6: Final answer
x = 969,844.87
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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.