Finding the Fourth Proportional to 812,964.96, 1,121,439.64 and 640,246.63
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Solution
The fourth proportional to 812,964.96, 1,121,439.64 and 640,246.63 is: 883,184.38
Step by Step Solution
- Step 1: Write the proportion equation
812,964.96 : 1,121,439.64 = 640,246.63 : x - Step 2: Convert to fraction form
812,964.96/1,121,439.64 = 640,246.63/x - Step 3: Cross multiply
812,964.96x = 1,121,439.64 × 640,246.63 - Step 4: Simplify right side
812,964.96x = 717,997,950,258.41 - Step 5: Solve for x
x = 717,997,950,258.41/812,964.96 - Step 6: Final answer
x = 883,184.38
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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.