Finding the Fourth Proportional to 1,220,626,444.68, 1,830,767,198.58 and 391,472,329.32
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Solution
The fourth proportional to 1,220,626,444.68, 1,830,767,198.58 and 391,472,329.32 is: 587,153,180.89
Step by Step Solution
- Step 1: Write the proportion equation
1,220,626,444.68 : 1,830,767,198.58 = 391,472,329.32 : x - Step 2: Convert to fraction form
1,220,626,444.68/1,830,767,198.58 = 391,472,329.32/x - Step 3: Cross multiply
1,220,626,444.68x = 1,830,767,198.58 × 391,472,329.32 - Step 4: Simplify right side
1,220,626,444.68x = 716,694,699,670,763,520 - Step 5: Solve for x
x = 716,694,699,670,763,520/1,220,626,444.68 - Step 6: Final answer
x = 587,153,180.89
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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.