Finding the Fourth Proportional to 578,779.70, 868,169.55 and 485,467.70
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Solution
The fourth proportional to 578,779.70, 868,169.55 and 485,467.70 is: 728,201.55
Step by Step Solution
- Step 1: Write the proportion equation
578,779.70 : 868,169.55 = 485,467.70 : x - Step 2: Convert to fraction form
578,779.70/868,169.55 = 485,467.70/x - Step 3: Cross multiply
578,779.70x = 868,169.55 × 485,467.70 - Step 4: Simplify right side
578,779.70x = 421,468,274,648.54 - Step 5: Solve for x
x = 421,468,274,648.54/578,779.70 - Step 6: Final answer
x = 728,201.55
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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.