Finding the Fourth Proportional to 1,402,720.79, 1,935,715.98 and 790,868.21
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Solution
The fourth proportional to 1,402,720.79, 1,935,715.98 and 790,868.21 is: 1,091,376.31
Step by Step Solution
- Step 1: Write the proportion equation
1,402,720.79 : 1,935,715.98 = 790,868.21 : x - Step 2: Convert to fraction form
1,402,720.79/1,935,715.98 = 790,868.21/x - Step 3: Cross multiply
1,402,720.79x = 1,935,715.98 × 790,868.21 - Step 4: Simplify right side
1,402,720.79x = 1,530,896,237,010.29 - Step 5: Solve for x
x = 1,530,896,237,010.29/1,402,720.79 - Step 6: Final answer
x = 1,091,376.31
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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.