Finding the Fourth Proportional to 1,277,809,966.36, 1,916,926,738.26 and 448,548,445
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Solution
The fourth proportional to 1,277,809,966.36, 1,916,926,738.26 and 448,548,445 is: 672,897,011.50
Step by Step Solution
- Step 1: Write the proportion equation
1,277,809,966.36 : 1,916,926,738.26 = 448,548,445 : x - Step 2: Convert to fraction form
1,277,809,966.36/1,916,926,738.26 = 448,548,445/x - Step 3: Cross multiply
1,277,809,966.36x = 1,916,926,738.26 × 448,548,445 - Step 4: Simplify right side
1,277,809,966.36x = 859,834,507,625,444,992 - Step 5: Solve for x
x = 859,834,507,625,444,992/1,277,809,966.36 - Step 6: Final answer
x = 672,897,011.50
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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.