Finding the Fourth Proportional to 722,460.12, 996,994.95 and 400,191.09
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Solution
The fourth proportional to 722,460.12, 996,994.95 and 400,191.09 is: 552,263.70
Step by Step Solution
- Step 1: Write the proportion equation
722,460.12 : 996,994.95 = 400,191.09 : x - Step 2: Convert to fraction form
722,460.12/996,994.95 = 400,191.09/x - Step 3: Cross multiply
722,460.12x = 996,994.95 × 400,191.09 - Step 4: Simplify right side
722,460.12x = 398,988,495,765.00 - Step 5: Solve for x
x = 398,988,495,765.00/722,460.12 - Step 6: Final answer
x = 552,263.70
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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.