Finding the Fourth Proportional to 991,881,351.87, 1,368,488,113.34 and 562,647,899.13
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Solution
The fourth proportional to 991,881,351.87, 1,368,488,113.34 and 562,647,899.13 is: 776,279,300.45
Step by Step Solution
- Step 1: Write the proportion equation
991,881,351.87 : 1,368,488,113.34 = 562,647,899.13 : x - Step 2: Convert to fraction form
991,881,351.87/1,368,488,113.34 = 562,647,899.13/x - Step 3: Cross multiply
991,881,351.87x = 1,368,488,113.34 × 562,647,899.13 - Step 4: Simplify right side
991,881,351.87x = 769,976,961,955,128,320 - Step 5: Solve for x
x = 769,976,961,955,128,320/991,881,351.87 - Step 6: Final answer
x = 776,279,300.45
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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.