Finding the Fourth Proportional to 489,138,955.62, 674,754,482.70 and 290,759,344.62
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Solution
The fourth proportional to 489,138,955.62, 674,754,482.70 and 290,759,344.62 is: 401,094,962.72
Step by Step Solution
- Step 1: Write the proportion equation
489,138,955.62 : 674,754,482.70 = 290,759,344.62 : x - Step 2: Convert to fraction form
489,138,955.62/674,754,482.70 = 290,759,344.62/x - Step 3: Cross multiply
489,138,955.62x = 674,754,482.70 × 290,759,344.62 - Step 4: Simplify right side
489,138,955.62x = 196,191,171,169,259,136 - Step 5: Solve for x
x = 196,191,171,169,259,136/489,138,955.62 - Step 6: Final answer
x = 401,094,962.72
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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.