Finding the Fourth Proportional to 1,385,446,879.80, 2,075,272,982.10 and 649,145,215.80
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Solution
The fourth proportional to 1,385,446,879.80, 2,075,272,982.10 and 649,145,215.80 is: 972,360,288.55
Step by Step Solution
- Step 1: Write the proportion equation
1,385,446,879.80 : 2,075,272,982.10 = 649,145,215.80 : x - Step 2: Convert to fraction form
1,385,446,879.80/2,075,272,982.10 = 649,145,215.80/x - Step 3: Cross multiply
1,385,446,879.80x = 2,075,272,982.10 × 649,145,215.80 - Step 4: Simplify right side
1,385,446,879.80x = 1,347,153,527,809,213,952 - Step 5: Solve for x
x = 1,347,153,527,809,213,952/1,385,446,879.80 - Step 6: Final answer
x = 972,360,288.55
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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.