Finding the Fourth Proportional to 1,128,102, 1,556,780.85 and 618,805.68
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Solution
The fourth proportional to 1,128,102, 1,556,780.85 and 618,805.68 is: 853,951.89
Step by Step Solution
- Step 1: Write the proportion equation
1,128,102 : 1,556,780.85 = 618,805.68 : x - Step 2: Convert to fraction form
1,128,102/1,556,780.85 = 618,805.68/x - Step 3: Cross multiply
1,128,102x = 1,556,780.85 × 618,805.68 - Step 4: Simplify right side
1,128,102x = 963,344,832,495.23 - Step 5: Solve for x
x = 963,344,832,495.23/1,128,102 - Step 6: Final answer
x = 853,951.89
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1.5x scale
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.