Finding the Fourth Proportional to 1,990,657,218.80, 2,985,985,828.20 and 610,460,764.40
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Solution
The fourth proportional to 1,990,657,218.80, 2,985,985,828.20 and 610,460,764.40 is: 915,691,146.60
Step by Step Solution
- Step 1: Write the proportion equation
1,990,657,218.80 : 2,985,985,828.20 = 610,460,764.40 : x - Step 2: Convert to fraction form
1,990,657,218.80/2,985,985,828.20 = 610,460,764.40/x - Step 3: Cross multiply
1,990,657,218.80x = 2,985,985,828.20 × 610,460,764.40 - Step 4: Simplify right side
1,990,657,218.80x = 1,822,827,191,170,539,008 - Step 5: Solve for x
x = 1,822,827,191,170,539,008/1,990,657,218.80 - Step 6: Final answer
x = 915,691,146.60
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.