Finding the Fourth Proportional to 885,696,601.20, 1,328,544,901.80 and 394,408,921.20
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Solution
The fourth proportional to 885,696,601.20, 1,328,544,901.80 and 394,408,921.20 is: 591,613,381.80
Step by Step Solution
- Step 1: Write the proportion equation
885,696,601.20 : 1,328,544,901.80 = 394,408,921.20 : x - Step 2: Convert to fraction form
885,696,601.20/1,328,544,901.80 = 394,408,921.20/x - Step 3: Cross multiply
885,696,601.20x = 1,328,544,901.80 × 394,408,921.20 - Step 4: Simplify right side
885,696,601.20x = 523,989,961,484,697,920 - Step 5: Solve for x
x = 523,989,961,484,697,920/885,696,601.20 - Step 6: Final answer
x = 591,613,381.80
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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.