Finding the Fourth Proportional to 1,119,626,812.70, 1,679,440,219.05 and 712,487,894.30
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Solution
The fourth proportional to 1,119,626,812.70, 1,679,440,219.05 and 712,487,894.30 is: 1,068,731,841.45
Step by Step Solution
- Step 1: Write the proportion equation
1,119,626,812.70 : 1,679,440,219.05 = 712,487,894.30 : x - Step 2: Convert to fraction form
1,119,626,812.70/1,679,440,219.05 = 712,487,894.30/x - Step 3: Cross multiply
1,119,626,812.70x = 1,679,440,219.05 × 712,487,894.30 - Step 4: Simplify right side
1,119,626,812.70x = 1,196,580,825,273,665,024 - Step 5: Solve for x
x = 1,196,580,825,273,665,024/1,119,626,812.70 - Step 6: Final answer
x = 1,068,731,841.45
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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.