Finding the Fourth Proportional to 665,747,878.36, 918,801,225.66 and 383,500,073.56
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Solution
The fourth proportional to 665,747,878.36, 918,801,225.66 and 383,500,073.56 is: 529,269,936.99
Step by Step Solution
- Step 1: Write the proportion equation
665,747,878.36 : 918,801,225.66 = 383,500,073.56 : x - Step 2: Convert to fraction form
665,747,878.36/918,801,225.66 = 383,500,073.56/x - Step 3: Cross multiply
665,747,878.36x = 918,801,225.66 × 383,500,073.56 - Step 4: Simplify right side
665,747,878.36x = 352,360,337,627,628,160 - Step 5: Solve for x
x = 352,360,337,627,628,160/665,747,878.36 - Step 6: Final answer
x = 529,269,936.99
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1.5x scale
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.