Finding the Fourth Proportional to 5,118,817,006.89, 7,678,512,486.99 and 1,438,035,386.49
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Solution
The fourth proportional to 5,118,817,006.89, 7,678,512,486.99 and 1,438,035,386.49 is: 2,157,133,700.43
Step by Step Solution
- Step 1: Write the proportion equation
5,118,817,006.89 : 7,678,512,486.99 = 1,438,035,386.49 : x - Step 2: Convert to fraction form
5,118,817,006.89/7,678,512,486.99 = 1,438,035,386.49/x - Step 3: Cross multiply
5,118,817,006.89x = 7,678,512,486.99 × 1,438,035,386.49 - Step 4: Simplify right side
5,118,817,006.89x = 11,041,972,671,896,954,880 - Step 5: Solve for x
x = 11,041,972,671,896,954,880/5,118,817,006.89 - Step 6: Final answer
x = 2,157,133,700.43
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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.