Finding the Fourth Proportional to 639,397,158.40, 959,095,737.60 and 432,772,897.60
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Solution
The fourth proportional to 639,397,158.40, 959,095,737.60 and 432,772,897.60 is: 649,159,346.40
Step by Step Solution
- Step 1: Write the proportion equation
639,397,158.40 : 959,095,737.60 = 432,772,897.60 : x - Step 2: Convert to fraction form
639,397,158.40/959,095,737.60 = 432,772,897.60/x - Step 3: Cross multiply
639,397,158.40x = 959,095,737.60 × 432,772,897.60 - Step 4: Simplify right side
639,397,158.40x = 415,070,641,436,961,280 - Step 5: Solve for x
x = 415,070,641,436,961,280/639,397,158.40 - Step 6: Final answer
x = 649,159,346.40
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Similar ratio
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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.