Finding the Fourth Proportional to 638,971,882.80, 958,457,824.20 and 570,097,129.20
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Solution
The fourth proportional to 638,971,882.80, 958,457,824.20 and 570,097,129.20 is: 855,145,693.80
Step by Step Solution
- Step 1: Write the proportion equation
638,971,882.80 : 958,457,824.20 = 570,097,129.20 : x - Step 2: Convert to fraction form
638,971,882.80/958,457,824.20 = 570,097,129.20/x - Step 3: Cross multiply
638,971,882.80x = 958,457,824.20 × 570,097,129.20 - Step 4: Simplify right side
638,971,882.80x = 546,414,054,035,698,368 - Step 5: Solve for x
x = 546,414,054,035,698,368/638,971,882.80 - Step 6: Final answer
x = 855,145,693.80
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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.