Finding the Fourth Proportional to 1,157,541,712.80, 1,738,328,108.40 and 613,346,128.80
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Solution
The fourth proportional to 1,157,541,712.80, 1,738,328,108.40 and 613,346,128.80 is: 921,087,166.09
Step by Step Solution
- Step 1: Write the proportion equation
1,157,541,712.80 : 1,738,328,108.40 = 613,346,128.80 : x - Step 2: Convert to fraction form
1,157,541,712.80/1,738,328,108.40 = 613,346,128.80/x - Step 3: Cross multiply
1,157,541,712.80x = 1,738,328,108.40 × 613,346,128.80 - Step 4: Simplify right side
1,157,541,712.80x = 1,066,196,815,871,366,784 - Step 5: Solve for x
x = 1,066,196,815,871,366,784/1,157,541,712.80 - Step 6: Final answer
x = 921,087,166.09
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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.