Finding the Fourth Proportional to 457,652.18, 631,811.39 and 312,675.95
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Solution
The fourth proportional to 457,652.18, 631,811.39 and 312,675.95 is: 431,664.56
Step by Step Solution
- Step 1: Write the proportion equation
457,652.18 : 631,811.39 = 312,675.95 : x - Step 2: Convert to fraction form
457,652.18/631,811.39 = 312,675.95/x - Step 3: Cross multiply
457,652.18x = 631,811.39 × 312,675.95 - Step 4: Simplify right side
457,652.18x = 197,552,224,810.08 - Step 5: Solve for x
x = 197,552,224,810.08/457,652.18 - Step 6: Final answer
x = 431,664.56
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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.