Finding the Fourth Proportional to 819,376,201.70, 1,229,064,302.55 and 805,771,312.10
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Solution
The fourth proportional to 819,376,201.70, 1,229,064,302.55 and 805,771,312.10 is: 1,208,656,968.15
Step by Step Solution
- Step 1: Write the proportion equation
819,376,201.70 : 1,229,064,302.55 = 805,771,312.10 : x - Step 2: Convert to fraction form
819,376,201.70/1,229,064,302.55 = 805,771,312.10/x - Step 3: Cross multiply
819,376,201.70x = 1,229,064,302.55 × 805,771,312.10 - Step 4: Simplify right side
819,376,201.70x = 990,344,755,720,984,832 - Step 5: Solve for x
x = 990,344,755,720,984,832/819,376,201.70 - Step 6: Final answer
x = 1,208,656,968.15
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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.