Finding the Fourth Proportional to 493,984.70, 681,448.08 and 312,390.80
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Solution
The fourth proportional to 493,984.70, 681,448.08 and 312,390.80 is: 430,940.70
Step by Step Solution
- Step 1: Write the proportion equation
493,984.70 : 681,448.08 = 312,390.80 : x - Step 2: Convert to fraction form
493,984.70/681,448.08 = 312,390.80/x - Step 3: Cross multiply
493,984.70x = 681,448.08 × 312,390.80 - Step 4: Simplify right side
493,984.70x = 212,878,110,869.66 - Step 5: Solve for x
x = 212,878,110,869.66/493,984.70 - Step 6: Final answer
x = 430,940.70
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.