Finding the Fourth Proportional to 1,247,362.29, 1,721,231.40 and 920,848.95
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Solution
The fourth proportional to 1,247,362.29, 1,721,231.40 and 920,848.95 is: 1,270,676.64
Step by Step Solution
- Step 1: Write the proportion equation
1,247,362.29 : 1,721,231.40 = 920,848.95 : x - Step 2: Convert to fraction form
1,247,362.29/1,721,231.40 = 920,848.95/x - Step 3: Cross multiply
1,247,362.29x = 1,721,231.40 × 920,848.95 - Step 4: Simplify right side
1,247,362.29x = 1,584,994,127,397.03 - Step 5: Solve for x
x = 1,584,994,127,397.03/1,247,362.29 - Step 6: Final answer
x = 1,270,676.64
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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.