Finding the Fourth Proportional to 874,715,312.40, 1,312,272,034.20 and 511,022,461.20
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Solution
The fourth proportional to 874,715,312.40, 1,312,272,034.20 and 511,022,461.20 is: 766,649,989.06
Step by Step Solution
- Step 1: Write the proportion equation
874,715,312.40 : 1,312,272,034.20 = 511,022,461.20 : x - Step 2: Convert to fraction form
874,715,312.40/1,312,272,034.20 = 511,022,461.20/x - Step 3: Cross multiply
874,715,312.40x = 1,312,272,034.20 × 511,022,461.20 - Step 4: Simplify right side
874,715,312.40x = 670,600,484,680,814,592 - Step 5: Solve for x
x = 670,600,484,680,814,592/874,715,312.40 - Step 6: Final answer
x = 766,649,989.06
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Double scale
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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.