Finding the Fourth Proportional to 1,402,253.99, 2,101,720.21 and 643,455.88
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Solution
The fourth proportional to 1,402,253.99, 2,101,720.21 and 643,455.88 is: 964,421.73
Step by Step Solution
- Step 1: Write the proportion equation
1,402,253.99 : 2,101,720.21 = 643,455.88 : x - Step 2: Convert to fraction form
1,402,253.99/2,101,720.21 = 643,455.88/x - Step 3: Cross multiply
1,402,253.99x = 2,101,720.21 × 643,455.88 - Step 4: Simplify right side
1,402,253.99x = 1,352,364,220,376.39 - Step 5: Solve for x
x = 1,352,364,220,376.39/1,402,253.99 - Step 6: Final answer
x = 964,421.73
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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.