Finding the Fourth Proportional to 698,471,432.90, 1,047,707,149.35 and 207,202,415.30
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Solution
The fourth proportional to 698,471,432.90, 1,047,707,149.35 and 207,202,415.30 is: 310,803,622.95
Step by Step Solution
- Step 1: Write the proportion equation
698,471,432.90 : 1,047,707,149.35 = 207,202,415.30 : x - Step 2: Convert to fraction form
698,471,432.90/1,047,707,149.35 = 207,202,415.30/x - Step 3: Cross multiply
698,471,432.90x = 1,047,707,149.35 × 207,202,415.30 - Step 4: Simplify right side
698,471,432.90x = 217,087,451,872,397,856 - Step 5: Solve for x
x = 217,087,451,872,397,856/698,471,432.90 - Step 6: Final answer
x = 310,803,622.95
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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.