Finding the Fourth Proportional to 678,434,007.30, 1,017,651,010.95 and 609,559,253.70
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Solution
The fourth proportional to 678,434,007.30, 1,017,651,010.95 and 609,559,253.70 is: 914,338,880.55
Step by Step Solution
- Step 1: Write the proportion equation
678,434,007.30 : 1,017,651,010.95 = 609,559,253.70 : x - Step 2: Convert to fraction form
678,434,007.30/1,017,651,010.95 = 609,559,253.70/x - Step 3: Cross multiply
678,434,007.30x = 1,017,651,010.95 × 609,559,253.70 - Step 4: Simplify right side
678,434,007.30x = 620,318,590,761,732,608 - Step 5: Solve for x
x = 620,318,590,761,732,608/678,434,007.30 - Step 6: Final answer
x = 914,338,880.55
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1.5x scale
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.