Finding the Fourth Proportional to 1,342,629,420.21, 1,852,582,638.47 and 747,899,104.23
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Solution
The fourth proportional to 1,342,629,420.21, 1,852,582,638.47 and 747,899,104.23 is: 1,031,963,753.34
Step by Step Solution
- Step 1: Write the proportion equation
1,342,629,420.21 : 1,852,582,638.47 = 747,899,104.23 : x - Step 2: Convert to fraction form
1,342,629,420.21/1,852,582,638.47 = 747,899,104.23/x - Step 3: Cross multiply
1,342,629,420.21x = 1,852,582,638.47 × 747,899,104.23 - Step 4: Simplify right side
1,342,629,420.21x = 1,385,544,895,820,023,296 - Step 5: Solve for x
x = 1,385,544,895,820,023,296/1,342,629,420.21 - Step 6: Final answer
x = 1,031,963,753.34
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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.