Finding the Fourth Proportional to 1,918,447.70, 2,878,708.35 and 853,654.10
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Solution
The fourth proportional to 1,918,447.70, 2,878,708.35 and 853,654.10 is: 1,280,942.50
Step by Step Solution
- Step 1: Write the proportion equation
1,918,447.70 : 2,878,708.35 = 853,654.10 : x - Step 2: Convert to fraction form
1,918,447.70/2,878,708.35 = 853,654.10/x - Step 3: Cross multiply
1,918,447.70x = 2,878,708.35 × 853,654.10 - Step 4: Simplify right side
1,918,447.70x = 2,457,421,185,681.74 - Step 5: Solve for x
x = 2,457,421,185,681.74/1,918,447.70 - Step 6: Final answer
x = 1,280,942.50
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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.