Finding the Fourth Proportional to 853,570,861.98, 1,177,928,984.79 and 462,430,285.98
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Solution
The fourth proportional to 853,570,861.98, 1,177,928,984.79 and 462,430,285.98 is: 638,154,442.19
Step by Step Solution
- Step 1: Write the proportion equation
853,570,861.98 : 1,177,928,984.79 = 462,430,285.98 : x - Step 2: Convert to fraction form
853,570,861.98/1,177,928,984.79 = 462,430,285.98/x - Step 3: Cross multiply
853,570,861.98x = 1,177,928,984.79 × 462,430,285.98 - Step 4: Simplify right side
853,570,861.98x = 544,710,037,300,570,752 - Step 5: Solve for x
x = 544,710,037,300,570,752/853,570,861.98 - Step 6: Final answer
x = 638,154,442.19
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1.5x scale
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.