Finding the Fourth Proportional to 1,107,622,841.96, 1,528,990,166.06 and 690,141,392.79
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Solution
The fourth proportional to 1,107,622,841.96, 1,528,990,166.06 and 690,141,392.79 is: 952,688,372.61
Step by Step Solution
- Step 1: Write the proportion equation
1,107,622,841.96 : 1,528,990,166.06 = 690,141,392.79 : x - Step 2: Convert to fraction form
1,107,622,841.96/1,528,990,166.06 = 690,141,392.79/x - Step 3: Cross multiply
1,107,622,841.96x = 1,528,990,166.06 × 690,141,392.79 - Step 4: Simplify right side
1,107,622,841.96x = 1,055,219,402,763,411,072 - Step 5: Solve for x
x = 1,055,219,402,763,411,072/1,107,622,841.96 - Step 6: Final answer
x = 952,688,372.61
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1.5x scale
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.