Finding the Fourth Proportional to 759,043,835.20, 1,138,657,885.44 and 213,785,368.96
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Solution
The fourth proportional to 759,043,835.20, 1,138,657,885.44 and 213,785,368.96 is: 320,704,002.68
Step by Step Solution
- Step 1: Write the proportion equation
759,043,835.20 : 1,138,657,885.44 = 213,785,368.96 : x - Step 2: Convert to fraction form
759,043,835.20/1,138,657,885.44 = 213,785,368.96/x - Step 3: Cross multiply
759,043,835.20x = 1,138,657,885.44 × 213,785,368.96 - Step 4: Simplify right side
759,043,835.20x = 243,428,396,158,003,840 - Step 5: Solve for x
x = 243,428,396,158,003,840/759,043,835.20 - Step 6: Final answer
x = 320,704,002.68
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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.