Finding the Fourth Proportional to 839,814,937.70, 1,259,722,406.55 and 379,768,115.30
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Solution
The fourth proportional to 839,814,937.70, 1,259,722,406.55 and 379,768,115.30 is: 569,652,172.95
Step by Step Solution
- Step 1: Write the proportion equation
839,814,937.70 : 1,259,722,406.55 = 379,768,115.30 : x - Step 2: Convert to fraction form
839,814,937.70/1,259,722,406.55 = 379,768,115.30/x - Step 3: Cross multiply
839,814,937.70x = 1,259,722,406.55 × 379,768,115.30 - Step 4: Simplify right side
839,814,937.70x = 478,402,404,136,673,856 - Step 5: Solve for x
x = 478,402,404,136,673,856/839,814,937.70 - Step 6: Final answer
x = 569,652,172.95
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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.