Finding the Fourth Proportional to 1,223,778.22, 1,688,866.46 and 679,913.99
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Solution
The fourth proportional to 1,223,778.22, 1,688,866.46 and 679,913.99 is: 938,310.48
Step by Step Solution
- Step 1: Write the proportion equation
1,223,778.22 : 1,688,866.46 = 679,913.99 : x - Step 2: Convert to fraction form
1,223,778.22/1,688,866.46 = 679,913.99/x - Step 3: Cross multiply
1,223,778.22x = 1,688,866.46 × 679,913.99 - Step 4: Simplify right side
1,223,778.22x = 1,148,283,933,395.78 - Step 5: Solve for x
x = 1,148,283,933,395.78/1,223,778.22 - Step 6: Final answer
x = 938,310.48
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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.