Finding the Fourth Proportional to 893,640.98, 1,339,708.12 and 387,820.95
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Solution
The fourth proportional to 893,640.98, 1,339,708.12 and 387,820.95 is: 581,404.48
Step by Step Solution
- Step 1: Write the proportion equation
893,640.98 : 1,339,708.12 = 387,820.95 : x - Step 2: Convert to fraction form
893,640.98/1,339,708.12 = 387,820.95/x - Step 3: Cross multiply
893,640.98x = 1,339,708.12 × 387,820.95 - Step 4: Simplify right side
893,640.98x = 519,566,874,851.56 - Step 5: Solve for x
x = 519,566,874,851.56/893,640.98 - Step 6: Final answer
x = 581,404.48
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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.