Finding the Fourth Proportional to 12,242,679.90, 18,348,273.45 and 7,445,276.70
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Solution
The fourth proportional to 12,242,679.90, 18,348,273.45 and 7,445,276.70 is: 11,158,339.02
Step by Step Solution
- Step 1: Write the proportion equation
12,242,679.90 : 18,348,273.45 = 7,445,276.70 : x - Step 2: Convert to fraction form
12,242,679.90/18,348,273.45 = 7,445,276.70/x - Step 3: Cross multiply
12,242,679.90x = 18,348,273.45 × 7,445,276.70 - Step 4: Simplify right side
12,242,679.90x = 136,607,972,802,513.61 - Step 5: Solve for x
x = 136,607,972,802,513.61/12,242,679.90 - Step 6: Final answer
x = 11,158,339.02
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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.