Finding the Fourth Proportional to 383,207,745.61, 528,826,920.62 and 206,995,818.81
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Solution
The fourth proportional to 383,207,745.61, 528,826,920.62 and 206,995,818.81 is: 285,654,355.11
Step by Step Solution
- Step 1: Write the proportion equation
383,207,745.61 : 528,826,920.62 = 206,995,818.81 : x - Step 2: Convert to fraction form
383,207,745.61/528,826,920.62 = 206,995,818.81/x - Step 3: Cross multiply
383,207,745.61x = 528,826,920.62 × 206,995,818.81 - Step 4: Simplify right side
383,207,745.61x = 109,464,961,443,455,904 - Step 5: Solve for x
x = 109,464,961,443,455,904/383,207,745.61 - Step 6: Final answer
x = 285,654,355.11
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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.