Finding the Fourth Proportional to 812,783.36, 1,121,652.84 and 468,613.28
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Solution
The fourth proportional to 812,783.36, 1,121,652.84 and 468,613.28 is: 646,693.13
Step by Step Solution
- Step 1: Write the proportion equation
812,783.36 : 1,121,652.84 = 468,613.28 : x - Step 2: Convert to fraction form
812,783.36/1,121,652.84 = 468,613.28/x - Step 3: Cross multiply
812,783.36x = 1,121,652.84 × 468,613.28 - Step 4: Simplify right side
812,783.36x = 525,621,416,373.72 - Step 5: Solve for x
x = 525,621,416,373.72/812,783.36 - Step 6: Final answer
x = 646,693.13
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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.