Finding the Fourth Proportional to 1,380,418,865.69, 2,070,670,813.88 and 603,664,700.09
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Solution
The fourth proportional to 1,380,418,865.69, 2,070,670,813.88 and 603,664,700.09 is: 905,515,642.32
Step by Step Solution
- Step 1: Write the proportion equation
1,380,418,865.69 : 2,070,670,813.88 = 603,664,700.09 : x - Step 2: Convert to fraction form
1,380,418,865.69/2,070,670,813.88 = 603,664,700.09/x - Step 3: Cross multiply
1,380,418,865.69x = 2,070,670,813.88 × 603,664,700.09 - Step 4: Simplify right side
1,380,418,865.69x = 1,249,990,875,832,614,912 - Step 5: Solve for x
x = 1,249,990,875,832,614,912/1,380,418,865.69 - Step 6: Final answer
x = 905,515,642.32
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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.