Finding the Fourth Proportional to 420,561,633.70, 580,408,138.63 and 239,516,270.28
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Solution
The fourth proportional to 420,561,633.70, 580,408,138.63 and 239,516,270.28 is: 330,551,294.90
Step by Step Solution
- Step 1: Write the proportion equation
420,561,633.70 : 580,408,138.63 = 239,516,270.28 : x - Step 2: Convert to fraction form
420,561,633.70/580,408,138.63 = 239,516,270.28/x - Step 3: Cross multiply
420,561,633.70x = 580,408,138.63 × 239,516,270.28 - Step 4: Simplify right side
420,561,633.70x = 139,017,192,605,114,192 - Step 5: Solve for x
x = 139,017,192,605,114,192/420,561,633.70 - Step 6: Final answer
x = 330,551,294.90
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.