Finding the Fourth Proportional to 712,932,137.80, 1,069,398,206.70 and 687,104,105.20
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Solution
The fourth proportional to 712,932,137.80, 1,069,398,206.70 and 687,104,105.20 is: 1,030,656,157.80
Step by Step Solution
- Step 1: Write the proportion equation
712,932,137.80 : 1,069,398,206.70 = 687,104,105.20 : x - Step 2: Convert to fraction form
712,932,137.80/1,069,398,206.70 = 687,104,105.20/x - Step 3: Cross multiply
712,932,137.80x = 1,069,398,206.70 × 687,104,105.20 - Step 4: Simplify right side
712,932,137.80x = 734,787,897,917,088,256 - Step 5: Solve for x
x = 734,787,897,917,088,256/712,932,137.80 - Step 6: Final answer
x = 1,030,656,157.80
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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.