Finding the Fourth Proportional to 1,298,651.38, 1,791,701.99 and 840,345.80
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Solution
The fourth proportional to 1,298,651.38, 1,791,701.99 and 840,345.80 is: 1,159,394.48
Step by Step Solution
- Step 1: Write the proportion equation
1,298,651.38 : 1,791,701.99 = 840,345.80 : x - Step 2: Convert to fraction form
1,298,651.38/1,791,701.99 = 840,345.80/x - Step 3: Cross multiply
1,298,651.38x = 1,791,701.99 × 840,345.80 - Step 4: Simplify right side
1,298,651.38x = 1,505,649,232,139.20 - Step 5: Solve for x
x = 1,505,649,232,139.20/1,298,651.38 - Step 6: Final answer
x = 1,159,394.48
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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.