Finding the Fourth Proportional to 817,631.34, 1,128,363.84 and 455,070.48
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Solution
The fourth proportional to 817,631.34, 1,128,363.84 and 455,070.48 is: 628,015.40
Step by Step Solution
- Step 1: Write the proportion equation
817,631.34 : 1,128,363.84 = 455,070.48 : x - Step 2: Convert to fraction form
817,631.34/1,128,363.84 = 455,070.48/x - Step 3: Cross multiply
817,631.34x = 1,128,363.84 × 455,070.48 - Step 4: Simplify right side
817,631.34x = 513,485,074,283.44 - Step 5: Solve for x
x = 513,485,074,283.44/817,631.34 - Step 6: Final answer
x = 628,015.40
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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.