Finding the Fourth Proportional to 1,139,038,998.24, 1,571,934,849.12 and 637,217,845.92
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Solution
The fourth proportional to 1,139,038,998.24, 1,571,934,849.12 and 637,217,845.92 is: 879,394,770.53
Step by Step Solution
- Step 1: Write the proportion equation
1,139,038,998.24 : 1,571,934,849.12 = 637,217,845.92 : x - Step 2: Convert to fraction form
1,139,038,998.24/1,571,934,849.12 = 637,217,845.92/x - Step 3: Cross multiply
1,139,038,998.24x = 1,571,934,849.12 × 637,217,845.92 - Step 4: Simplify right side
1,139,038,998.24x = 1,001,664,938,482,826,496 - Step 5: Solve for x
x = 1,001,664,938,482,826,496/1,139,038,998.24 - Step 6: Final answer
x = 879,394,770.53
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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.