Finding the Fourth Proportional to 1,421,107.40, 2,130,624.30 and 579,225.80
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Solution
The fourth proportional to 1,421,107.40, 2,130,624.30 and 579,225.80 is: 868,416.11
Step by Step Solution
- Step 1: Write the proportion equation
1,421,107.40 : 2,130,624.30 = 579,225.80 : x - Step 2: Convert to fraction form
1,421,107.40/2,130,624.30 = 579,225.80/x - Step 3: Cross multiply
1,421,107.40x = 2,130,624.30 × 579,225.80 - Step 4: Simplify right side
1,421,107.40x = 1,234,112,564,666.94 - Step 5: Solve for x
x = 1,234,112,564,666.94/1,421,107.40 - Step 6: Final answer
x = 868,416.11
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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.