Finding the Fourth Proportional to 726,783,103.80, 1,090,174,655.70 and 420,673,087.80
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Solution
The fourth proportional to 726,783,103.80, 1,090,174,655.70 and 420,673,087.80 is: 631,009,631.70
Step by Step Solution
- Step 1: Write the proportion equation
726,783,103.80 : 1,090,174,655.70 = 420,673,087.80 : x - Step 2: Convert to fraction form
726,783,103.80/1,090,174,655.70 = 420,673,087.80/x - Step 3: Cross multiply
726,783,103.80x = 1,090,174,655.70 × 420,673,087.80 - Step 4: Simplify right side
726,783,103.80x = 458,607,138,654,620,928 - Step 5: Solve for x
x = 458,607,138,654,620,928/726,783,103.80 - Step 6: Final answer
x = 631,009,631.70
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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.