Finding the Fourth Proportional to 1,368,125.40, 1,888,374.62 and 787,420
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Solution
The fourth proportional to 1,368,125.40, 1,888,374.62 and 787,420 is: 1,086,847.70
Step by Step Solution
- Step 1: Write the proportion equation
1,368,125.40 : 1,888,374.62 = 787,420 : x - Step 2: Convert to fraction form
1,368,125.40/1,888,374.62 = 787,420/x - Step 3: Cross multiply
1,368,125.40x = 1,888,374.62 × 787,420 - Step 4: Simplify right side
1,368,125.40x = 1,486,943,943,280.40 - Step 5: Solve for x
x = 1,486,943,943,280.40/1,368,125.40 - Step 6: Final answer
x = 1,086,847.70
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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.