Finding the Fourth Proportional to 1,490,170,366.65, 2,056,342,448.39 and 821,077,968.44
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Solution
The fourth proportional to 1,490,170,366.65, 2,056,342,448.39 and 821,077,968.44 is: 1,133,036,542.48
Step by Step Solution
- Step 1: Write the proportion equation
1,490,170,366.65 : 2,056,342,448.39 = 821,077,968.44 : x - Step 2: Convert to fraction form
1,490,170,366.65/2,056,342,448.39 = 821,077,968.44/x - Step 3: Cross multiply
1,490,170,366.65x = 2,056,342,448.39 × 821,077,968.44 - Step 4: Simplify right side
1,490,170,366.65x = 1,688,417,479,946,712,320 - Step 5: Solve for x
x = 1,688,417,479,946,712,320/1,490,170,366.65 - Step 6: Final answer
x = 1,133,036,542.48
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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.