Finding the Fourth Proportional to 919,493,343.20, 1,379,911,861.20 and 647,395,551.20
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Solution
The fourth proportional to 919,493,343.20, 1,379,911,861.20 and 647,395,551.20 is: 971,566,359.45
Step by Step Solution
- Step 1: Write the proportion equation
919,493,343.20 : 1,379,911,861.20 = 647,395,551.20 : x - Step 2: Convert to fraction form
919,493,343.20/1,379,911,861.20 = 647,395,551.20/x - Step 3: Cross multiply
919,493,343.20x = 1,379,911,861.20 × 647,395,551.20 - Step 4: Simplify right side
919,493,343.20x = 893,348,799,988,992,000 - Step 5: Solve for x
x = 893,348,799,988,992,000/919,493,343.20 - Step 6: Final answer
x = 971,566,359.45
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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.