Finding the Fourth Proportional to 639,763,251.84, 959,644,877.76 and 155,089,059.84
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Solution
The fourth proportional to 639,763,251.84, 959,644,877.76 and 155,089,059.84 is: 232,633,589.76
Step by Step Solution
- Step 1: Write the proportion equation
639,763,251.84 : 959,644,877.76 = 155,089,059.84 : x - Step 2: Convert to fraction form
639,763,251.84/959,644,877.76 = 155,089,059.84/x - Step 3: Cross multiply
639,763,251.84x = 959,644,877.76 × 155,089,059.84 - Step 4: Simplify right side
639,763,251.84x = 148,830,421,872,070,112 - Step 5: Solve for x
x = 148,830,421,872,070,112/639,763,251.84 - Step 6: Final answer
x = 232,633,589.76
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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.