Finding the Fourth Proportional to 1,272,965.12, 1,909,305.12 and 326,358.08
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Solution
The fourth proportional to 1,272,965.12, 1,909,305.12 and 326,358.08 is: 489,500.57
Step by Step Solution
- Step 1: Write the proportion equation
1,272,965.12 : 1,909,305.12 = 326,358.08 : x - Step 2: Convert to fraction form
1,272,965.12/1,909,305.12 = 326,358.08/x - Step 3: Cross multiply
1,272,965.12x = 1,909,305.12 × 326,358.08 - Step 4: Simplify right side
1,272,965.12x = 623,117,153,097.37 - Step 5: Solve for x
x = 623,117,153,097.37/1,272,965.12 - Step 6: Final answer
x = 489,500.57
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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.