Finding the Fourth Proportional to 840,107,101.20, 1,260,160,651.80 and 725,221,366.80
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Solution
The fourth proportional to 840,107,101.20, 1,260,160,651.80 and 725,221,366.80 is: 1,087,832,050.20
Step by Step Solution
- Step 1: Write the proportion equation
840,107,101.20 : 1,260,160,651.80 = 725,221,366.80 : x - Step 2: Convert to fraction form
840,107,101.20/1,260,160,651.80 = 725,221,366.80/x - Step 3: Cross multiply
840,107,101.20x = 1,260,160,651.80 × 725,221,366.80 - Step 4: Simplify right side
840,107,101.20x = 913,895,430,285,974,784 - Step 5: Solve for x
x = 913,895,430,285,974,784/840,107,101.20 - Step 6: Final answer
x = 1,087,832,050.20
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Double scale
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Similar ratio
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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.