Finding the Fourth Proportional to 1,872,807,617.70, 2,808,361,120.95 and 707,888,945.70
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Solution
The fourth proportional to 1,872,807,617.70, 2,808,361,120.95 and 707,888,945.70 is: 1,061,512,017.71
Step by Step Solution
- Step 1: Write the proportion equation
1,872,807,617.70 : 2,808,361,120.95 = 707,888,945.70 : x - Step 2: Convert to fraction form
1,872,807,617.70/2,808,361,120.95 = 707,888,945.70/x - Step 3: Cross multiply
1,872,807,617.70x = 2,808,361,120.95 × 707,888,945.70 - Step 4: Simplify right side
1,872,807,617.70x = 1,988,007,793,054,165,760 - Step 5: Solve for x
x = 1,988,007,793,054,165,760/1,872,807,617.70 - Step 6: Final answer
x = 1,061,512,017.71
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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.