Finding the Fourth Proportional to 660,798,121.70, 991,197,182.55 and 354,688,105.70
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Solution
The fourth proportional to 660,798,121.70, 991,197,182.55 and 354,688,105.70 is: 532,032,158.55
Step by Step Solution
- Step 1: Write the proportion equation
660,798,121.70 : 991,197,182.55 = 354,688,105.70 : x - Step 2: Convert to fraction form
660,798,121.70/991,197,182.55 = 354,688,105.70/x - Step 3: Cross multiply
660,798,121.70x = 991,197,182.55 × 354,688,105.70 - Step 4: Simplify right side
660,798,121.70x = 351,565,851,053,836,544 - Step 5: Solve for x
x = 351,565,851,053,836,544/660,798,121.70 - Step 6: Final answer
x = 532,032,158.55
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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.