Finding the Fourth Proportional to 638,701.89, 881,421.35 and 412,741.05
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Solution
The fourth proportional to 638,701.89, 881,421.35 and 412,741.05 is: 569,590.88
Step by Step Solution
- Step 1: Write the proportion equation
638,701.89 : 881,421.35 = 412,741.05 : x - Step 2: Convert to fraction form
638,701.89/881,421.35 = 412,741.05/x - Step 3: Cross multiply
638,701.89x = 881,421.35 × 412,741.05 - Step 4: Simplify right side
638,701.89x = 363,798,771,427.71 - Step 5: Solve for x
x = 363,798,771,427.71/638,701.89 - Step 6: Final answer
x = 569,590.88
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1.5x scale
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.