Finding the Fourth Proportional to 1,272,576,554.98, 1,756,128,120.43 and 736,750,816.21
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Solution
The fourth proportional to 1,272,576,554.98, 1,756,128,120.43 and 736,750,816.21 is: 1,016,700,190.67
Step by Step Solution
- Step 1: Write the proportion equation
1,272,576,554.98 : 1,756,128,120.43 = 736,750,816.21 : x - Step 2: Convert to fraction form
1,272,576,554.98/1,756,128,120.43 = 736,750,816.21/x - Step 3: Cross multiply
1,272,576,554.98x = 1,756,128,120.43 × 736,750,816.21 - Step 4: Simplify right side
1,272,576,554.98x = 1,293,828,826,096,135,680 - Step 5: Solve for x
x = 1,293,828,826,096,135,680/1,272,576,554.98 - Step 6: Final answer
x = 1,016,700,190.67
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.