Finding the Fourth Proportional to 860,855.80, 1,291,283.70 and 577,420.60
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Solution
The fourth proportional to 860,855.80, 1,291,283.70 and 577,420.60 is: 866,130.90
Step by Step Solution
- Step 1: Write the proportion equation
860,855.80 : 1,291,283.70 = 577,420.60 : x - Step 2: Convert to fraction form
860,855.80/1,291,283.70 = 577,420.60/x - Step 3: Cross multiply
860,855.80x = 1,291,283.70 × 577,420.60 - Step 4: Simplify right side
860,855.80x = 745,613,808,824.22 - Step 5: Solve for x
x = 745,613,808,824.22/860,855.80 - Step 6: Final answer
x = 866,130.90
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1.5x scale
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.