Finding the Fourth Proportional to 921,058,936.84, 1,381,195,138.92 and 533,149,522.12
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Solution
The fourth proportional to 921,058,936.84, 1,381,195,138.92 and 533,149,522.12 is: 799,496,643.28
Step by Step Solution
- Step 1: Write the proportion equation
921,058,936.84 : 1,381,195,138.92 = 533,149,522.12 : x - Step 2: Convert to fraction form
921,058,936.84/1,381,195,138.92 = 533,149,522.12/x - Step 3: Cross multiply
921,058,936.84x = 1,381,195,138.92 × 533,149,522.12 - Step 4: Simplify right side
921,058,936.84x = 736,383,528,269,665,024 - Step 5: Solve for x
x = 736,383,528,269,665,024/921,058,936.84 - Step 6: Final answer
x = 799,496,643.28
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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.