Finding the Fourth Proportional to 863,138,840.70, 1,294,708,261.05 and 857,092,223.10
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Solution
The fourth proportional to 863,138,840.70, 1,294,708,261.05 and 857,092,223.10 is: 1,285,638,334.65
Step by Step Solution
- Step 1: Write the proportion equation
863,138,840.70 : 1,294,708,261.05 = 857,092,223.10 : x - Step 2: Convert to fraction form
863,138,840.70/1,294,708,261.05 = 857,092,223.10/x - Step 3: Cross multiply
863,138,840.70x = 1,294,708,261.05 × 857,092,223.10 - Step 4: Simplify right side
863,138,840.70x = 1,109,684,381,729,279,616 - Step 5: Solve for x
x = 1,109,684,381,729,279,616/863,138,840.70 - Step 6: Final answer
x = 1,285,638,334.65
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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.