Finding the Fourth Proportional to 1,028,029,810.94, 1,542,191,135.99 and 319,039,631.87
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Solution
The fourth proportional to 1,028,029,810.94, 1,542,191,135.99 and 319,039,631.87 is: 478,604,887.77
Step by Step Solution
- Step 1: Write the proportion equation
1,028,029,810.94 : 1,542,191,135.99 = 319,039,631.87 : x - Step 2: Convert to fraction form
1,028,029,810.94/1,542,191,135.99 = 319,039,631.87/x - Step 3: Cross multiply
1,028,029,810.94x = 1,542,191,135.99 × 319,039,631.87 - Step 4: Simplify right side
1,028,029,810.94x = 492,020,092,290,120,512 - Step 5: Solve for x
x = 492,020,092,290,120,512/1,028,029,810.94 - Step 6: Final answer
x = 478,604,887.77
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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.