Finding the Fourth Proportional to 1,574,653,420.40, 2,361,980,130.60 and 990,493,473.20
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Solution
The fourth proportional to 1,574,653,420.40, 2,361,980,130.60 and 990,493,473.20 is: 1,485,740,209.80
Step by Step Solution
- Step 1: Write the proportion equation
1,574,653,420.40 : 2,361,980,130.60 = 990,493,473.20 : x - Step 2: Convert to fraction form
1,574,653,420.40/2,361,980,130.60 = 990,493,473.20/x - Step 3: Cross multiply
1,574,653,420.40x = 2,361,980,130.60 × 990,493,473.20 - Step 4: Simplify right side
1,574,653,420.40x = 2,339,525,903,187,383,808 - Step 5: Solve for x
x = 2,339,525,903,187,383,808/1,574,653,420.40 - Step 6: Final answer
x = 1,485,740,209.80
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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.