Finding the Fourth Proportional to 712,971,339.97, 1,068,702,207.57 and 239,819,958.70
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Solution
The fourth proportional to 712,971,339.97, 1,068,702,207.57 and 239,819,958.70 is: 359,476,047.51
Step by Step Solution
- Step 1: Write the proportion equation
712,971,339.97 : 1,068,702,207.57 = 239,819,958.70 : x - Step 2: Convert to fraction form
712,971,339.97/1,068,702,207.57 = 239,819,958.70/x - Step 3: Cross multiply
712,971,339.97x = 1,068,702,207.57 × 239,819,958.70 - Step 4: Simplify right side
712,971,339.97x = 256,296,119,282,036,224 - Step 5: Solve for x
x = 256,296,119,282,036,224/712,971,339.97 - Step 6: Final answer
x = 359,476,047.51
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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.