Finding the Fourth Proportional to 877,603.12, 1,211,221.50 and 515,226.80
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Solution
The fourth proportional to 877,603.12, 1,211,221.50 and 515,226.80 is: 711,088.83
Step by Step Solution
- Step 1: Write the proportion equation
877,603.12 : 1,211,221.50 = 515,226.80 : x - Step 2: Convert to fraction form
877,603.12/1,211,221.50 = 515,226.80/x - Step 3: Cross multiply
877,603.12x = 1,211,221.50 × 515,226.80 - Step 4: Simplify right side
877,603.12x = 624,053,777,536.20 - Step 5: Solve for x
x = 624,053,777,536.20/877,603.12 - Step 6: Final answer
x = 711,088.83
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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.