Finding the Fourth Proportional to 1,403,942,402.91, 1,937,416,838.00 and 777,397,378.75
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Solution
The fourth proportional to 1,403,942,402.91, 1,937,416,838.00 and 777,397,378.75 is: 1,072,795,271.58
Step by Step Solution
- Step 1: Write the proportion equation
1,403,942,402.91 : 1,937,416,838.00 = 777,397,378.75 : x - Step 2: Convert to fraction form
1,403,942,402.91/1,937,416,838.00 = 777,397,378.75/x - Step 3: Cross multiply
1,403,942,402.91x = 1,937,416,838.00 × 777,397,378.75 - Step 4: Simplify right side
1,403,942,402.91x = 1,506,142,771,409,470,976 - Step 5: Solve for x
x = 1,506,142,771,409,470,976/1,403,942,402.91 - Step 6: Final answer
x = 1,072,795,271.58
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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.