Finding the Fourth Proportional to 812,815.96, 1,220,011.26 and 392,387.08
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Solution
The fourth proportional to 812,815.96, 1,220,011.26 and 392,387.08 is: 588,960.70
Step by Step Solution
- Step 1: Write the proportion equation
812,815.96 : 1,220,011.26 = 392,387.08 : x - Step 2: Convert to fraction form
812,815.96/1,220,011.26 = 392,387.08/x - Step 3: Cross multiply
812,815.96x = 1,220,011.26 × 392,387.08 - Step 4: Simplify right side
812,815.96x = 478,716,655,878.52 - Step 5: Solve for x
x = 478,716,655,878.52/812,815.96 - Step 6: Final answer
x = 588,960.70
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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.