Finding the Fourth Proportional to 920,440,970.53, 1,270,200,125.69 and 502,753,130.53
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Solution
The fourth proportional to 920,440,970.53, 1,270,200,125.69 and 502,753,130.53 is: 693,794,724.52
Step by Step Solution
- Step 1: Write the proportion equation
920,440,970.53 : 1,270,200,125.69 = 502,753,130.53 : x - Step 2: Convert to fraction form
920,440,970.53/1,270,200,125.69 = 502,753,130.53/x - Step 3: Cross multiply
920,440,970.53x = 1,270,200,125.69 × 502,753,130.53 - Step 4: Simplify right side
920,440,970.53x = 638,597,089,590,246,912 - Step 5: Solve for x
x = 638,597,089,590,246,912/920,440,970.53 - Step 6: Final answer
x = 693,794,724.52
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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.