Finding the Fourth Proportional to 1,260,184,118.88, 1,890,260,973 and 327,424,430.79
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Solution
The fourth proportional to 1,260,184,118.88, 1,890,260,973 and 327,424,430.79 is: 491,132,695.50
Step by Step Solution
- Step 1: Write the proportion equation
1,260,184,118.88 : 1,890,260,973 = 327,424,430.79 : x - Step 2: Convert to fraction form
1,260,184,118.88/1,890,260,973 = 327,424,430.79/x - Step 3: Cross multiply
1,260,184,118.88x = 1,890,260,973 × 327,424,430.79 - Step 4: Simplify right side
1,260,184,118.88x = 618,917,623,129,076,608 - Step 5: Solve for x
x = 618,917,623,129,076,608/1,260,184,118.88 - Step 6: Final answer
x = 491,132,695.50
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Double scale
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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.