Finding the Fourth Proportional to 817,709, 1,128,449.11 and 450,228.88
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Solution
The fourth proportional to 817,709, 1,128,449.11 and 450,228.88 is: 621,321.73
Step by Step Solution
- Step 1: Write the proportion equation
817,709 : 1,128,449.11 = 450,228.88 : x - Step 2: Convert to fraction form
817,709/1,128,449.11 = 450,228.88/x - Step 3: Cross multiply
817,709x = 1,128,449.11 × 450,228.88 - Step 4: Simplify right side
817,709x = 508,060,373,290.05 - Step 5: Solve for x
x = 508,060,373,290.05/817,709 - Step 6: Final answer
x = 621,321.73
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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.