Finding the Fourth Proportional to 5,313,947,985.54, 7,967,838,172.95 and 2,515,893,039.12
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Solution
The fourth proportional to 5,313,947,985.54, 7,967,838,172.95 and 2,515,893,039.12 is: 3,772,379,528.50
Step by Step Solution
- Step 1: Write the proportion equation
5,313,947,985.54 : 7,967,838,172.95 = 2,515,893,039.12 : x - Step 2: Convert to fraction form
5,313,947,985.54/7,967,838,172.95 = 2,515,893,039.12/x - Step 3: Cross multiply
5,313,947,985.54x = 7,967,838,172.95 × 2,515,893,039.12 - Step 4: Simplify right side
5,313,947,985.54x = 20,046,228,596,159,520,768 - Step 5: Solve for x
x = 20,046,228,596,159,520,768/5,313,947,985.54 - Step 6: Final answer
x = 3,772,379,528.50
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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.