Finding the Fourth Proportional to 778,738,987.26, 1,074,659,854.85 and 426,314,977.99
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Solution
The fourth proportional to 778,738,987.26, 1,074,659,854.85 and 426,314,977.99 is: 588,314,698.33
Step by Step Solution
- Step 1: Write the proportion equation
778,738,987.26 : 1,074,659,854.85 = 426,314,977.99 : x - Step 2: Convert to fraction form
778,738,987.26/1,074,659,854.85 = 426,314,977.99/x - Step 3: Cross multiply
778,738,987.26x = 1,074,659,854.85 × 426,314,977.99 - Step 4: Simplify right side
778,738,987.26x = 458,143,592,367,114,304 - Step 5: Solve for x
x = 458,143,592,367,114,304/778,738,987.26 - Step 6: Final answer
x = 588,314,698.33
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Double scale
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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.