Finding the Fourth Proportional to 1,346,943.70, 2,020,415.55 and 638,355.70
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Solution
The fourth proportional to 1,346,943.70, 2,020,415.55 and 638,355.70 is: 957,533.55
Step by Step Solution
- Step 1: Write the proportion equation
1,346,943.70 : 2,020,415.55 = 638,355.70 : x - Step 2: Convert to fraction form
1,346,943.70/2,020,415.55 = 638,355.70/x - Step 3: Cross multiply
1,346,943.70x = 2,020,415.55 × 638,355.70 - Step 4: Simplify right side
1,346,943.70x = 1,289,743,782,711.14 - Step 5: Solve for x
x = 1,289,743,782,711.14/1,346,943.70 - Step 6: Final answer
x = 957,533.55
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1.5x scale
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.