Finding the Fourth Proportional to 3,155,494,706.78, 4,354,199,906.20 and 1,817,817,851.70
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Solution
The fourth proportional to 3,155,494,706.78, 4,354,199,906.20 and 1,817,817,851.70 is: 2,508,368,118.12
Step by Step Solution
- Step 1: Write the proportion equation
3,155,494,706.78 : 4,354,199,906.20 = 1,817,817,851.70 : x - Step 2: Convert to fraction form
3,155,494,706.78/4,354,199,906.20 = 1,817,817,851.70/x - Step 3: Cross multiply
3,155,494,706.78x = 4,354,199,906.20 × 1,817,817,851.70 - Step 4: Simplify right side
3,155,494,706.78x = 7,915,142,319,356,281,856 - Step 5: Solve for x
x = 7,915,142,319,356,281,856/3,155,494,706.78 - Step 6: Final answer
x = 2,508,368,118.12
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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.