Finding the Fourth Proportional to 778,415,621.97, 1,074,212,864.31 and 439,395,457.17
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Solution
The fourth proportional to 778,415,621.97, 1,074,212,864.31 and 439,395,457.17 is: 606,365,339.14
Step by Step Solution
- Step 1: Write the proportion equation
778,415,621.97 : 1,074,212,864.31 = 439,395,457.17 : x - Step 2: Convert to fraction form
778,415,621.97/1,074,212,864.31 = 439,395,457.17/x - Step 3: Cross multiply
778,415,621.97x = 1,074,212,864.31 × 439,395,457.17 - Step 4: Simplify right side
778,415,621.97x = 472,004,252,611,387,648 - Step 5: Solve for x
x = 472,004,252,611,387,648/778,415,621.97 - Step 6: Final answer
x = 606,365,339.14
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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.