Finding the Fourth Proportional to 1,272,975.12, 1,909,320.12 and 326,368.08
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Solution
The fourth proportional to 1,272,975.12, 1,909,320.12 and 326,368.08 is: 489,515.57
Step by Step Solution
- Step 1: Write the proportion equation
1,272,975.12 : 1,909,320.12 = 326,368.08 : x - Step 2: Convert to fraction form
1,272,975.12/1,909,320.12 = 326,368.08/x - Step 3: Cross multiply
1,272,975.12x = 1,909,320.12 × 326,368.08 - Step 4: Simplify right side
1,272,975.12x = 623,141,141,669.77 - Step 5: Solve for x
x = 623,141,141,669.77/1,272,975.12 - Step 6: Final answer
x = 489,515.57
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1.5x scale
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.