Finding the Fourth Proportional to 1,201,872,381.49, 1,658,675,899.02 and 756,217,750.22
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Solution
The fourth proportional to 1,201,872,381.49, 1,658,675,899.02 and 756,217,750.22 is: 1,043,638,389.59
Step by Step Solution
- Step 1: Write the proportion equation
1,201,872,381.49 : 1,658,675,899.02 = 756,217,750.22 : x - Step 2: Convert to fraction form
1,201,872,381.49/1,658,675,899.02 = 756,217,750.22/x - Step 3: Cross multiply
1,201,872,381.49x = 1,658,675,899.02 × 756,217,750.22 - Step 4: Simplify right side
1,201,872,381.49x = 1,254,320,156,706,944,000 - Step 5: Solve for x
x = 1,254,320,156,706,944,000/1,201,872,381.49 - Step 6: Final answer
x = 1,043,638,389.59
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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.