Finding the Fourth Proportional to 999,258,818.90, 1,378,972,111.61 and 547,128,571.08
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Solution
The fourth proportional to 999,258,818.90, 1,378,972,111.61 and 547,128,571.08 is: 755,034,658.41
Step by Step Solution
- Step 1: Write the proportion equation
999,258,818.90 : 1,378,972,111.61 = 547,128,571.08 : x - Step 2: Convert to fraction form
999,258,818.90/1,378,972,111.61 = 547,128,571.08/x - Step 3: Cross multiply
999,258,818.90x = 1,378,972,111.61 × 547,128,571.08 - Step 4: Simplify right side
999,258,818.90x = 754,475,040,990,888,576 - Step 5: Solve for x
x = 754,475,040,990,888,576/999,258,818.90 - Step 6: Final answer
x = 755,034,658.41
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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.