Finding the Fourth Proportional to 1,008,021,390.20, 1,512,032,085.30 and 317,998,395.80
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Solution
The fourth proportional to 1,008,021,390.20, 1,512,032,085.30 and 317,998,395.80 is: 476,997,593.70
Step by Step Solution
- Step 1: Write the proportion equation
1,008,021,390.20 : 1,512,032,085.30 = 317,998,395.80 : x - Step 2: Convert to fraction form
1,008,021,390.20/1,512,032,085.30 = 317,998,395.80/x - Step 3: Cross multiply
1,008,021,390.20x = 1,512,032,085.30 × 317,998,395.80 - Step 4: Simplify right side
1,008,021,390.20x = 480,823,777,523,528,768 - Step 5: Solve for x
x = 480,823,777,523,528,768/1,008,021,390.20 - Step 6: Final answer
x = 476,997,593.70
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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.