Finding the Fourth Proportional to 1,276,960,474.68, 1,762,204,675.56 and 690,249,610.68
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Solution
The fourth proportional to 1,276,960,474.68, 1,762,204,675.56 and 690,249,610.68 is: 952,544,041.39
Step by Step Solution
- Step 1: Write the proportion equation
1,276,960,474.68 : 1,762,204,675.56 = 690,249,610.68 : x - Step 2: Convert to fraction form
1,276,960,474.68/1,762,204,675.56 = 690,249,610.68/x - Step 3: Cross multiply
1,276,960,474.68x = 1,762,204,675.56 × 690,249,610.68 - Step 4: Simplify right side
1,276,960,474.68x = 1,216,361,091,243,765,504 - Step 5: Solve for x
x = 1,216,361,091,243,765,504/1,276,960,474.68 - Step 6: Final answer
x = 952,544,041.39
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.