Finding the Fourth Proportional to 1,295,463,966,901.90, 1,787,796,470,630.80 and 717,400,485,679.20
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Solution
The fourth proportional to 1,295,463,966,901.90, 1,787,796,470,630.80 and 717,400,485,679.20 is: 990,043,790,560.50
Step by Step Solution
- Step 1: Write the proportion equation
1,295,463,966,901.90 : 1,787,796,470,630.80 = 717,400,485,679.20 : x - Step 2: Convert to fraction form
1,295,463,966,901.90/1,787,796,470,630.80 = 717,400,485,679.20/x - Step 3: Cross multiply
1,295,463,966,901.90x = 1,787,796,470,630.80 × 717,400,485,679.20 - Step 4: Simplify right side
1,295,463,966,901.90x = 1,282,566,056,326,095,395,880,960 - Step 5: Solve for x
x = 1,282,566,056,326,095,395,880,960/1,295,463,966,901.90 - Step 6: Final answer
x = 990,043,790,560.50
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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.