Finding the Fourth Proportional to 1,240,377,934.80, 1,860,566,902.20 and 1,125,586,678.80
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Solution
The fourth proportional to 1,240,377,934.80, 1,860,566,902.20 and 1,125,586,678.80 is: 1,688,380,018.20
Step by Step Solution
- Step 1: Write the proportion equation
1,240,377,934.80 : 1,860,566,902.20 = 1,125,586,678.80 : x - Step 2: Convert to fraction form
1,240,377,934.80/1,860,566,902.20 = 1,125,586,678.80/x - Step 3: Cross multiply
1,240,377,934.80x = 1,860,566,902.20 × 1,125,586,678.80 - Step 4: Simplify right side
1,240,377,934.80x = 2,094,229,320,132,502,272 - Step 5: Solve for x
x = 2,094,229,320,132,502,272/1,240,377,934.80 - Step 6: Final answer
x = 1,688,380,018.20
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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.