Finding the Fourth Proportional to 646,768,617.20, 969,798,631.80 and 318,522,312.08
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Solution
The fourth proportional to 646,768,617.20, 969,798,631.80 and 318,522,312.08 is: 477,608,984.48
Step by Step Solution
- Step 1: Write the proportion equation
646,768,617.20 : 969,798,631.80 = 318,522,312.08 : x - Step 2: Convert to fraction form
646,768,617.20/969,798,631.80 = 318,522,312.08/x - Step 3: Cross multiply
646,768,617.20x = 969,798,631.80 × 318,522,312.08 - Step 4: Simplify right side
646,768,617.20x = 308,902,502,452,956,608 - Step 5: Solve for x
x = 308,902,502,452,956,608/646,768,617.20 - Step 6: Final answer
x = 477,608,984.48
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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.