Finding the Fourth Proportional to 1,278,368.10, 1,917,552.15 and 479,675.70
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Solution
The fourth proportional to 1,278,368.10, 1,917,552.15 and 479,675.70 is: 719,513.55
Step by Step Solution
- Step 1: Write the proportion equation
1,278,368.10 : 1,917,552.15 = 479,675.70 : x - Step 2: Convert to fraction form
1,278,368.10/1,917,552.15 = 479,675.70/x - Step 3: Cross multiply
1,278,368.10x = 1,917,552.15 × 479,675.70 - Step 4: Simplify right side
1,278,368.10x = 919,803,169,837.76 - Step 5: Solve for x
x = 919,803,169,837.76/1,278,368.10 - Step 6: Final answer
x = 719,513.55
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.