Finding the Fourth Proportional to 665,867.18, 999,511.55 and 286,974.90
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Solution
The fourth proportional to 665,867.18, 999,511.55 and 286,974.90 is: 430,768.68
Step by Step Solution
- Step 1: Write the proportion equation
665,867.18 : 999,511.55 = 286,974.90 : x - Step 2: Convert to fraction form
665,867.18/999,511.55 = 286,974.90/x - Step 3: Cross multiply
665,867.18x = 999,511.55 × 286,974.90 - Step 4: Simplify right side
665,867.18x = 286,834,727,110.10 - Step 5: Solve for x
x = 286,834,727,110.10/665,867.18 - Step 6: Final answer
x = 430,768.68
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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.