Finding the Fourth Proportional to 861,840,208.80, 1,292,760,313.20 and 848,235,319.20
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Solution
The fourth proportional to 861,840,208.80, 1,292,760,313.20 and 848,235,319.20 is: 1,272,352,978.80
Step by Step Solution
- Step 1: Write the proportion equation
861,840,208.80 : 1,292,760,313.20 = 848,235,319.20 : x - Step 2: Convert to fraction form
861,840,208.80/1,292,760,313.20 = 848,235,319.20/x - Step 3: Cross multiply
861,840,208.80x = 1,292,760,313.20 × 848,235,319.20 - Step 4: Simplify right side
861,840,208.80x = 1,096,564,956,916,294,016 - Step 5: Solve for x
x = 1,096,564,956,916,294,016/861,840,208.80 - Step 6: Final answer
x = 1,272,352,978.80
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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.