Finding the Fourth Proportional to 1,126,184,702.18, 1,690,249,590.31 and 781,380,466.97
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Solution
The fourth proportional to 1,126,184,702.18, 1,690,249,590.31 and 781,380,466.97 is: 1,172,745,475.60
Step by Step Solution
- Step 1: Write the proportion equation
1,126,184,702.18 : 1,690,249,590.31 = 781,380,466.97 : x - Step 2: Convert to fraction form
1,126,184,702.18/1,690,249,590.31 = 781,380,466.97/x - Step 3: Cross multiply
1,126,184,702.18x = 1,690,249,590.31 × 781,380,466.97 - Step 4: Simplify right side
1,126,184,702.18x = 1,320,728,014,174,551,040 - Step 5: Solve for x
x = 1,320,728,014,174,551,040/1,126,184,702.18 - Step 6: Final answer
x = 1,172,745,475.60
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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.