Finding the Fourth Proportional to 858,806,233.10, 1,288,209,349.65 and 725,780,645.90
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Solution
The fourth proportional to 858,806,233.10, 1,288,209,349.65 and 725,780,645.90 is: 1,088,670,968.85
Step by Step Solution
- Step 1: Write the proportion equation
858,806,233.10 : 1,288,209,349.65 = 725,780,645.90 : x - Step 2: Convert to fraction form
858,806,233.10/1,288,209,349.65 = 725,780,645.90/x - Step 3: Cross multiply
858,806,233.10x = 1,288,209,349.65 × 725,780,645.90 - Step 4: Simplify right side
858,806,233.10x = 934,957,413,843,395,968 - Step 5: Solve for x
x = 934,957,413,843,395,968/858,806,233.10 - Step 6: Final answer
x = 1,088,670,968.85
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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.