Finding the Fourth Proportional to 1,225,285.12, 1,690,970.88 and 688,775.68
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Solution
The fourth proportional to 1,225,285.12, 1,690,970.88 and 688,775.68 is: 950,553.96
Step by Step Solution
- Step 1: Write the proportion equation
1,225,285.12 : 1,690,970.88 = 688,775.68 : x - Step 2: Convert to fraction form
1,225,285.12/1,690,970.88 = 688,775.68/x - Step 3: Cross multiply
1,225,285.12x = 1,690,970.88 × 688,775.68 - Step 4: Simplify right side
1,225,285.12x = 1,164,699,617,732.20 - Step 5: Solve for x
x = 1,164,699,617,732.20/1,225,285.12 - Step 6: Final answer
x = 950,553.96
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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.