Finding the Fourth Proportional to 1,115,350.72, 1,539,590.16 and 686,206.24
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Solution
The fourth proportional to 1,115,350.72, 1,539,590.16 and 686,206.24 is: 947,214.50
Step by Step Solution
- Step 1: Write the proportion equation
1,115,350.72 : 1,539,590.16 = 686,206.24 : x - Step 2: Convert to fraction form
1,115,350.72/1,539,590.16 = 686,206.24/x - Step 3: Cross multiply
1,115,350.72x = 1,539,590.16 × 686,206.24 - Step 4: Simplify right side
1,115,350.72x = 1,056,476,374,834.60 - Step 5: Solve for x
x = 1,056,476,374,834.60/1,115,350.72 - Step 6: Final answer
x = 947,214.50
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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.