Finding the Fourth Proportional to 1,222,208,750.52, 1,686,688,816.14 and 686,454,828.84
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Solution
The fourth proportional to 1,222,208,750.52, 1,686,688,816.14 and 686,454,828.84 is: 947,330,545.70
Step by Step Solution
- Step 1: Write the proportion equation
1,222,208,750.52 : 1,686,688,816.14 = 686,454,828.84 : x - Step 2: Convert to fraction form
1,222,208,750.52/1,686,688,816.14 = 686,454,828.84/x - Step 3: Cross multiply
1,222,208,750.52x = 1,686,688,816.14 × 686,454,828.84 - Step 4: Simplify right side
1,222,208,750.52x = 1,157,835,682,589,725,952 - Step 5: Solve for x
x = 1,157,835,682,589,725,952/1,222,208,750.52 - Step 6: Final answer
x = 947,330,545.70
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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.