Finding the Fourth Proportional to 860,308.12, 1,186,889.21 and 492,588.75
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Solution
The fourth proportional to 860,308.12, 1,186,889.21 and 492,588.75 is: 679,580.09
Step by Step Solution
- Step 1: Write the proportion equation
860,308.12 : 1,186,889.21 = 492,588.75 : x - Step 2: Convert to fraction form
860,308.12/1,186,889.21 = 492,588.75/x - Step 3: Cross multiply
860,308.12x = 1,186,889.21 × 492,588.75 - Step 4: Simplify right side
860,308.12x = 584,648,272,342.39 - Step 5: Solve for x
x = 584,648,272,342.39/860,308.12 - Step 6: Final answer
x = 679,580.09
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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.