Finding the Fourth Proportional to 7,812,861.12, 10,781,225.64 and 4,327,963.92
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Solution
The fourth proportional to 7,812,861.12, 10,781,225.64 and 4,327,963.92 is: 5,972,300.65
Step by Step Solution
- Step 1: Write the proportion equation
7,812,861.12 : 10,781,225.64 = 4,327,963.92 : x - Step 2: Convert to fraction form
7,812,861.12/10,781,225.64 = 4,327,963.92/x - Step 3: Cross multiply
7,812,861.12x = 10,781,225.64 × 4,327,963.92 - Step 4: Simplify right side
7,812,861.12x = 46,660,755,583,298.91 - Step 5: Solve for x
x = 46,660,755,583,298.91/7,812,861.12 - Step 6: Final answer
x = 5,972,300.65
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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.