Finding the Fourth Proportional to 840,106,936.20, 1,260,160,404.30 and 725,221,201.80
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Solution
The fourth proportional to 840,106,936.20, 1,260,160,404.30 and 725,221,201.80 is: 1,087,831,802.70
Step by Step Solution
- Step 1: Write the proportion equation
840,106,936.20 : 1,260,160,404.30 = 725,221,201.80 : x - Step 2: Convert to fraction form
840,106,936.20/1,260,160,404.30 = 725,221,201.80/x - Step 3: Cross multiply
840,106,936.20x = 1,260,160,404.30 × 725,221,201.80 - Step 4: Simplify right side
840,106,936.20x = 913,895,042,867,219,840 - Step 5: Solve for x
x = 913,895,042,867,219,840/840,106,936.20 - Step 6: Final answer
x = 1,087,831,802.70
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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.