Finding the Fourth Proportional to 747,340,257.80, 1,121,010,386.70 and 436,128,408.20
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Solution
The fourth proportional to 747,340,257.80, 1,121,010,386.70 and 436,128,408.20 is: 654,192,612.30
Step by Step Solution
- Step 1: Write the proportion equation
747,340,257.80 : 1,121,010,386.70 = 436,128,408.20 : x - Step 2: Convert to fraction form
747,340,257.80/1,121,010,386.70 = 436,128,408.20/x - Step 3: Cross multiply
747,340,257.80x = 1,121,010,386.70 × 436,128,408.20 - Step 4: Simplify right side
747,340,257.80x = 488,904,475,527,137,472 - Step 5: Solve for x
x = 488,904,475,527,137,472/747,340,257.80 - Step 6: Final answer
x = 654,192,612.30
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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.