Finding the Fourth Proportional to 1,277,665,089.70, 1,916,497,634.55 and 459,482,145.70
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Solution
The fourth proportional to 1,277,665,089.70, 1,916,497,634.55 and 459,482,145.70 is: 689,223,218.55
Step by Step Solution
- Step 1: Write the proportion equation
1,277,665,089.70 : 1,916,497,634.55 = 459,482,145.70 : x - Step 2: Convert to fraction form
1,277,665,089.70/1,916,497,634.55 = 459,482,145.70/x - Step 3: Cross multiply
1,277,665,089.70x = 1,916,497,634.55 × 459,482,145.70 - Step 4: Simplify right side
1,277,665,089.70x = 880,596,445,352,008,448 - Step 5: Solve for x
x = 880,596,445,352,008,448/1,277,665,089.70 - Step 6: Final answer
x = 689,223,218.55
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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.