Finding the Fourth Proportional to 746,753,438.80, 1,120,130,158.20 and 672,776,851.60
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Solution
The fourth proportional to 746,753,438.80, 1,120,130,158.20 and 672,776,851.60 is: 1,009,165,277.40
Step by Step Solution
- Step 1: Write the proportion equation
746,753,438.80 : 1,120,130,158.20 = 672,776,851.60 : x - Step 2: Convert to fraction form
746,753,438.80/1,120,130,158.20 = 672,776,851.60/x - Step 3: Cross multiply
746,753,438.80x = 1,120,130,158.20 × 672,776,851.60 - Step 4: Simplify right side
746,753,438.80x = 753,597,641,216,006,016 - Step 5: Solve for x
x = 753,597,641,216,006,016/746,753,438.80 - Step 6: Final answer
x = 1,009,165,277.40
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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.