Finding the Fourth Proportional to 1,780,737,917.30, 2,457,409,273.62 and 987,775,686.98
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Solution
The fourth proportional to 1,780,737,917.30, 2,457,409,273.62 and 987,775,686.98 is: 1,363,125,426.75
Step by Step Solution
- Step 1: Write the proportion equation
1,780,737,917.30 : 2,457,409,273.62 = 987,775,686.98 : x - Step 2: Convert to fraction form
1,780,737,917.30/2,457,409,273.62 = 987,775,686.98/x - Step 3: Cross multiply
1,780,737,917.30x = 2,457,409,273.62 × 987,775,686.98 - Step 4: Simplify right side
1,780,737,917.30x = 2,427,369,133,441,018,368 - Step 5: Solve for x
x = 2,427,369,133,441,018,368/1,780,737,917.30 - Step 6: Final answer
x = 1,363,125,426.75
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1.5x scale
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.