Finding the Fourth Proportional to 738,781,976.70, 1,107,442,021.05 and 349,921,323.90
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Solution
The fourth proportional to 738,781,976.70, 1,107,442,021.05 and 349,921,323.90 is: 524,535,776.95
Step by Step Solution
- Step 1: Write the proportion equation
738,781,976.70 : 1,107,442,021.05 = 349,921,323.90 : x - Step 2: Convert to fraction form
738,781,976.70/1,107,442,021.05 = 349,921,323.90/x - Step 3: Cross multiply
738,781,976.70x = 1,107,442,021.05 × 349,921,323.90 - Step 4: Simplify right side
738,781,976.70x = 387,517,578,148,307,648 - Step 5: Solve for x
x = 387,517,578,148,307,648/738,781,976.70 - Step 6: Final answer
x = 524,535,776.95
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Double scale
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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.