Finding the Fourth Proportional to 1,212,801,673.58, 1,673,671,353.05 and 655,884,720.65
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Solution
The fourth proportional to 1,212,801,673.58, 1,673,671,353.05 and 655,884,720.65 is: 905,123,642.02
Step by Step Solution
- Step 1: Write the proportion equation
1,212,801,673.58 : 1,673,671,353.05 = 655,884,720.65 : x - Step 2: Convert to fraction form
1,212,801,673.58/1,673,671,353.05 = 655,884,720.65/x - Step 3: Cross multiply
1,212,801,673.58x = 1,673,671,353.05 × 655,884,720.65 - Step 4: Simplify right side
1,212,801,673.58x = 1,097,735,467,843,459,072 - Step 5: Solve for x
x = 1,097,735,467,843,459,072/1,212,801,673.58 - Step 6: Final answer
x = 905,123,642.02
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.