Finding the Fourth Proportional to 801,317.34, 1,105,775.55 and 438,671.70
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Solution
The fourth proportional to 801,317.34, 1,105,775.55 and 438,671.70 is: 605,343.75
Step by Step Solution
- Step 1: Write the proportion equation
801,317.34 : 1,105,775.55 = 438,671.70 : x - Step 2: Convert to fraction form
801,317.34/1,105,775.55 = 438,671.70/x - Step 3: Cross multiply
801,317.34x = 1,105,775.55 × 438,671.70 - Step 4: Simplify right side
801,317.34x = 485,072,440,336.94 - Step 5: Solve for x
x = 485,072,440,336.94/801,317.34 - Step 6: Final answer
x = 605,343.75
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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.