Finding the Fourth Proportional to 1,947,863.20, 2,919,807.60 and 1,316,840.80
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Solution
The fourth proportional to 1,947,863.20, 2,919,807.60 and 1,316,840.80 is: 1,973,917.77
Step by Step Solution
- Step 1: Write the proportion equation
1,947,863.20 : 2,919,807.60 = 1,316,840.80 : x - Step 2: Convert to fraction form
1,947,863.20/2,919,807.60 = 1,316,840.80/x - Step 3: Cross multiply
1,947,863.20x = 2,919,807.60 × 1,316,840.80 - Step 4: Simplify right side
1,947,863.20x = 3,844,921,775,830.08 - Step 5: Solve for x
x = 3,844,921,775,830.08/1,947,863.20 - Step 6: Final answer
x = 1,973,917.77
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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.