Finding the Fourth Proportional to 1,782,688,621.86, 2,460,014,266.32 and 989,683,525.62
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Solution
The fourth proportional to 1,782,688,621.86, 2,460,014,266.32 and 989,683,525.62 is: 1,365,709,951.99
Step by Step Solution
- Step 1: Write the proportion equation
1,782,688,621.86 : 2,460,014,266.32 = 989,683,525.62 : x - Step 2: Convert to fraction form
1,782,688,621.86/2,460,014,266.32 = 989,683,525.62/x - Step 3: Cross multiply
1,782,688,621.86x = 2,460,014,266.32 × 989,683,525.62 - Step 4: Simplify right side
1,782,688,621.86x = 2,434,635,592,167,075,328 - Step 5: Solve for x
x = 2,434,635,592,167,075,328/1,782,688,621.86 - Step 6: Final answer
x = 1,365,709,951.99
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.