Finding the Fourth Proportional to 1,690,315.99, 2,332,644.93 and 915,947.15
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Solution
The fourth proportional to 1,690,315.99, 2,332,644.93 and 915,947.15 is: 1,264,011.87
Step by Step Solution
- Step 1: Write the proportion equation
1,690,315.99 : 2,332,644.93 = 915,947.15 : x - Step 2: Convert to fraction form
1,690,315.99/2,332,644.93 = 915,947.15/x - Step 3: Cross multiply
1,690,315.99x = 2,332,644.93 × 915,947.15 - Step 4: Simplify right side
1,690,315.99x = 2,136,579,463,932.23 - Step 5: Solve for x
x = 2,136,579,463,932.23/1,690,315.99 - Step 6: Final answer
x = 1,264,011.87
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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.