Finding the Fourth Proportional to 800,809,602.80, 1,201,214,404.20 and 340,762,780.40
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Solution
The fourth proportional to 800,809,602.80, 1,201,214,404.20 and 340,762,780.40 is: 511,144,170.60
Step by Step Solution
- Step 1: Write the proportion equation
800,809,602.80 : 1,201,214,404.20 = 340,762,780.40 : x - Step 2: Convert to fraction form
800,809,602.80/1,201,214,404.20 = 340,762,780.40/x - Step 3: Cross multiply
800,809,602.80x = 1,201,214,404.20 × 340,762,780.40 - Step 4: Simplify right side
800,809,602.80x = 409,329,160,231,721,408 - Step 5: Solve for x
x = 409,329,160,231,721,408/800,809,602.80 - Step 6: Final answer
x = 511,144,170.60
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1.5x scale
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.