Finding the Fourth Proportional to 5,379,420.60, 7,420,283.64 and 3,285,280.62
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Solution
The fourth proportional to 5,379,420.60, 7,420,283.64 and 3,285,280.62 is: 4,531,661.65
Step by Step Solution
- Step 1: Write the proportion equation
5,379,420.60 : 7,420,283.64 = 3,285,280.62 : x - Step 2: Convert to fraction form
5,379,420.60/7,420,283.64 = 3,285,280.62/x - Step 3: Cross multiply
5,379,420.60x = 7,420,283.64 × 3,285,280.62 - Step 4: Simplify right side
5,379,420.60x = 24,377,714,037,395.05 - Step 5: Solve for x
x = 24,377,714,037,395.05/5,379,420.60 - Step 6: Final answer
x = 4,531,661.65
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1.5x scale
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.