Finding the Fourth Proportional to 1,428,136,487.28, 2,141,226,764.64 and 727,271,948.88
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Solution
The fourth proportional to 1,428,136,487.28, 2,141,226,764.64 and 727,271,948.88 is: 1,090,409,898.48
Step by Step Solution
- Step 1: Write the proportion equation
1,428,136,487.28 : 2,141,226,764.64 = 727,271,948.88 : x - Step 2: Convert to fraction form
1,428,136,487.28/2,141,226,764.64 = 727,271,948.88/x - Step 3: Cross multiply
1,428,136,487.28x = 2,141,226,764.64 × 727,271,948.88 - Step 4: Simplify right side
1,428,136,487.28x = 1,557,254,162,113,750,016 - Step 5: Solve for x
x = 1,557,254,162,113,750,016/1,428,136,487.28 - Step 6: Final answer
x = 1,090,409,898.48
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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.