Finding the Fourth Proportional to 612,395.84, 845,153.39 and 340,486.13
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Solution
The fourth proportional to 612,395.84, 845,153.39 and 340,486.13 is: 469,897.07
Step by Step Solution
- Step 1: Write the proportion equation
612,395.84 : 845,153.39 = 340,486.13 : x - Step 2: Convert to fraction form
612,395.84/845,153.39 = 340,486.13/x - Step 3: Cross multiply
612,395.84x = 845,153.39 × 340,486.13 - Step 4: Simplify right side
612,395.84x = 287,763,009,981.58 - Step 5: Solve for x
x = 287,763,009,981.58/612,395.84 - Step 6: Final answer
x = 469,897.07
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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.