Finding the Fourth Proportional to 472,392,496.70, 708,588,745.05 and 426,475,994.30
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Solution
The fourth proportional to 472,392,496.70, 708,588,745.05 and 426,475,994.30 is: 639,713,991.45
Step by Step Solution
- Step 1: Write the proportion equation
472,392,496.70 : 708,588,745.05 = 426,475,994.30 : x - Step 2: Convert to fraction form
472,392,496.70/708,588,745.05 = 426,475,994.30/x - Step 3: Cross multiply
472,392,496.70x = 708,588,745.05 × 426,475,994.30 - Step 4: Simplify right side
472,392,496.70x = 302,196,089,594,987,968 - Step 5: Solve for x
x = 302,196,089,594,987,968/472,392,496.70 - Step 6: Final answer
x = 639,713,991.45
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Similar ratio
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1.5x scale
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.