Finding the Fourth Proportional to 1,371,363,013.12, 2,057,589,599.64 and 438,829,543.12
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Solution
The fourth proportional to 1,371,363,013.12, 2,057,589,599.64 and 438,829,543.12 is: 658,418,737.64
Step by Step Solution
- Step 1: Write the proportion equation
1,371,363,013.12 : 2,057,589,599.64 = 438,829,543.12 : x - Step 2: Convert to fraction form
1,371,363,013.12/2,057,589,599.64 = 438,829,543.12/x - Step 3: Cross multiply
1,371,363,013.12x = 2,057,589,599.64 × 438,829,543.12 - Step 4: Simplify right side
1,371,363,013.12x = 902,931,103,938,484,992 - Step 5: Solve for x
x = 902,931,103,938,484,992/1,371,363,013.12 - Step 6: Final answer
x = 658,418,737.64
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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.