Finding the Fourth Proportional to 859,820,719.20, 1,287,817,891.20 and 706,765,711.20
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Solution
The fourth proportional to 859,820,719.20, 1,287,817,891.20 and 706,765,711.20 is: 1,058,575,941.99
Step by Step Solution
- Step 1: Write the proportion equation
859,820,719.20 : 1,287,817,891.20 = 706,765,711.20 : x - Step 2: Convert to fraction form
859,820,719.20/1,287,817,891.20 = 706,765,711.20/x - Step 3: Cross multiply
859,820,719.20x = 1,287,817,891.20 × 706,765,711.20 - Step 4: Simplify right side
859,820,719.20x = 910,185,527,770,052,352 - Step 5: Solve for x
x = 910,185,527,770,052,352/859,820,719.20 - Step 6: Final answer
x = 1,058,575,941.99
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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.