Finding the Fourth Proportional to 513,722,202.11, 708,936,638.96 and 278,772,862.59
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Solution
The fourth proportional to 513,722,202.11, 708,936,638.96 and 278,772,862.59 is: 384,706,550.40
Step by Step Solution
- Step 1: Write the proportion equation
513,722,202.11 : 708,936,638.96 = 278,772,862.59 : x - Step 2: Convert to fraction form
513,722,202.11/708,936,638.96 = 278,772,862.59/x - Step 3: Cross multiply
513,722,202.11x = 708,936,638.96 × 278,772,862.59 - Step 4: Simplify right side
513,722,202.11x = 197,632,296,237,812,512 - Step 5: Solve for x
x = 197,632,296,237,812,512/513,722,202.11 - Step 6: Final answer
x = 384,706,550.40
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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.