Finding the Fourth Proportional to 847,858.19, 1,170,109.40 and 485,395.74
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Solution
The fourth proportional to 847,858.19, 1,170,109.40 and 485,395.74 is: 669,883.39
Step by Step Solution
- Step 1: Write the proportion equation
847,858.19 : 1,170,109.40 = 485,395.74 : x - Step 2: Convert to fraction form
847,858.19/1,170,109.40 = 485,395.74/x - Step 3: Cross multiply
847,858.19x = 1,170,109.40 × 485,395.74 - Step 4: Simplify right side
847,858.19x = 567,966,115,666.98 - Step 5: Solve for x
x = 567,966,115,666.98/847,858.19 - Step 6: Final answer
x = 669,883.39
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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.