Finding the Fourth Proportional to 1,138,256.06, 1,570,774.26 and 621,998.60
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Solution
The fourth proportional to 1,138,256.06, 1,570,774.26 and 621,998.60 is: 858,347.63
Step by Step Solution
- Step 1: Write the proportion equation
1,138,256.06 : 1,570,774.26 = 621,998.60 : x - Step 2: Convert to fraction form
1,138,256.06/1,570,774.26 = 621,998.60/x - Step 3: Cross multiply
1,138,256.06x = 1,570,774.26 × 621,998.60 - Step 4: Simplify right side
1,138,256.06x = 977,019,390,636.04 - Step 5: Solve for x
x = 977,019,390,636.04/1,138,256.06 - Step 6: Final answer
x = 858,347.63
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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.